Speaking of Mnemonics
Artificially Belligerent Cambodians Demonstrating Endlessly For Gastroenterologists

is how I remember the notes in the scale of A Minor.
( sandettie light vessel automatic New Twitter - @bollocksreally, Fri 1 Jul 2011, 12:16, 3 replies)

Periodic Table, 1st 20-ish elements
HHeLiBeBCNOFNeNaMgAlSiPSClArKa... I think. I can still say it in my head phonetically as one word, 20 years after my Chemistry GCSE.

No I can't be bothered to go check if I'm right..
( DeadEyeDick, Fri 1 Jul 2011, 12:15, 8 replies)

A mine of useless information.
I can solve a rubiks cube in about a minute. I can tell you all the trivia of the Rocky saga, including why "steadycam" came about. I can also advise you on why drinking is very bad for you, but I drink anyway. Not to put too fine a point on it, I also have a very violent cat, but I'm quite the opposite. I'm a bouncer btw.
( vulga is a foul mouthed cunt, Fri 1 Jul 2011, 12:10, 3 replies)

Stupid very early Channel 4 kids programme.....
It was called Everybody Here and the presenter would say the name of the show very quickly over and over again dropping one letter....e.g.

Everybody, verybody, erybody, rybody, ybody, body, ody, dy, y.

I can do that really really fast. And also the mantra for a free big mac really quckly too.

Two all beef patties, special sauce, lettuce, cheese, pickles etc etc.

Oh fuck...what a sad life I lead.
(Designated Slagger, Fri 1 Jul 2011, 12:09, 2 replies)

I remembered last night
That I can slice a banana without opening or cutting the peel. It's not much of a talent, but watching my 4 year old nieces reaction when she peeled it made me glad I remembered I could do it.
( scarpe We Stole Bikes, Fri 1 Jul 2011, 12:03, 10 replies)

Having locked myself out a few times...
I learned how to open the front door of a house without a key and without causing damage.
( EnglishHaggis Blah blah. Whatever., Fri 1 Jul 2011, 12:01, 7 replies)

How to adjust a camchain tensioner tensioner tensioner.
On a Kawasaki Z500 there is a camchain tensioner, that is pushed on by a sprung tensioner itself pushed onto by a threaded tensioner. The limit of movement is reached when the chamfered faces of the sprung and threaded tensioners are lined up. To get some extra play and be able to tighten up the tensioner tensioner tensioner, remove the threaded tensioner, file off a few mill from the leading edge of the chamfer, then replace. As the chamfer now has a blunt edge, this allows a few extra mill of movement between the faces of the threaded and sprung tensioner which will push the main tensioner slightly further than it should, thus increasing the tension of the cam chain and stopping a rattle.
( Brandy_Bumwinkle, Fri 1 Jul 2011, 12:00, Reply)

Huge
chunks of my brain are still given over to CP/M commands and weird things you can do in LocoScript...
(Wong Fei-Hung - now with added flickr.com (see profile), Fri 1 Jul 2011, 11:56, Reply)

Impulse 9
all weapons on Quake and a handful of other games of that era (like Duke Nukem)
( Crap Little Monkey Deathstar, so good they built it twice, Fri 1 Jul 2011, 11:50, 3 replies)

I can still Telnet into my email
Yeahhhhh....
( Jeccius Steam Borderlands 2 junkie, Fri 1 Jul 2011, 11:49, Reply)

My Nan's phone number
And she has been dead over half of my life.
(Catomiagi is in with a chance, Fri 1 Jul 2011, 11:45, 2 replies)

I am an expert
at minutely altering the volume on a tape recorder, having spent many an evening trying to load Operation Wolf on the Amstrad CPC.

Seriously, I could crack safes.
( Finite "Aardvark sorted out my shit!" on, Fri 1 Jul 2011, 11:45, 3 replies)

I can and I think always will remember all the dialogue to The Princess Bride
and Diablo II.
( WormuIus, Fri 1 Jul 2011, 11:44, 7 replies)

Amo, amas, I loved a lass
and she was tall and slender,
I can't remember the rest help me out.
( Je suis un vagabond is an unfunny, up your own arse middle class knob, Fri 1 Jul 2011, 11:33, 8 replies)

The only thing I can remember from learning latin
is the following verb table:

Mitoe
Mitis
Mitit
Mitimus
Mititis
Mitunt

Can't think why I remember that.. (probably spelt it wrong anyway)
( Finite "Aardvark sorted out my shit!" on, Fri 1 Jul 2011, 11:31, 2 replies)

I still know Pluto is a planet
So don't go giving me any of your planetoid nonsense, I just shan't listen.
( M3rx likes the Asian ladies, Fri 1 Jul 2011, 11:20, 3 replies)

I stilll konw how to buy a porn mag without anyone in the shop noticing
Sunday papers ftw :)
( Crap Little Monkey Deathstar, so good they built it twice, Fri 1 Jul 2011, 11:19, 5 replies)

not terribly interesting and will spawn a list I guess!
How to get golden sonic on the mega drive (sonic 2)
where all the secret pipes are in Mario on the NES
programming in basic
how to ride a bike :P
the commands required to backup the old system they still use in my last job in the NHS that backs up on those reel to reel tapes (which they only stopped doing in 2006!!!)
How to change the boot image for windows 95/98
2 phone numbers I've not used since 1996 (granted not really a skill!)
Product codes from my old job for installing Windows 95, Windows 98 and XP and Office 2000

sure I'll think of more
(mr_spongmonkey, Fri 1 Jul 2011, 11:15, 4 replies)

I learnt the alphabet by the clever trick of assigning each character a different letter.
Works a treat.
( scarpe We Stole Bikes, Fri 1 Jul 2011, 11:15, Reply)

I still use my analogue writst watch to find out what the time is.

( Je suis un vagabond is an unfunny, up your own arse middle class knob, Fri 1 Jul 2011, 11:08, 1 reply)

How to chill out when I find the the rare amount of time available
When I was a teenager I studied, drunk heavily with friends and on the nights where I wasn't doing this I was basically the King of Sloth and did next to fuck all.
I am now a parent, working long hours and constantly being requested to help others or do "man-jobs" ie gardening,DIY and other shit invented by God to kill our sanity.
So now I am the master of finding gaps in my time and lazing about with the skills of yesteryear, so much so that I've managed to get myself a 2 hour window of complete fuck-all-dom to lounge about in a cafe in Tenby right now while posting this on my Blackberry.
Do I look or feel smug? All I need is a croisant :)
( Jeccius Steam Borderlands 2 junkie, Fri 1 Jul 2011, 11:06, Reply)

I can still remember the urls for snopes.com and wikipedia.com
which cunningly allows me to check that the post I'm about to make isn't a tired old chestnut or urban legend.

And then I did a great big poo.
( Dr. Shambolic je suis charlie, Fri 1 Jul 2011, 11:02, 4 replies)

Get off my lawn
I'm a bit of a dab hand at splicing sound effects
onto reel-to-reel tape(amateur theater), my
Pièce de résistance being making a loop of 'train sounds'
with a couple of feet of tape looped over a pencil.
( Owza, Fri 1 Jul 2011, 11:01, Reply)

A useful mnemonic: "There" and "Their" both start with
"The".

Take that, I before E fans!
( Je suis un vagabond is an unfunny, up your own arse middle class knob, Fri 1 Jul 2011, 10:56, 4 replies)

Because
The only time I remember our Headmaster coming into the classroom in primary school, he told us his way to spell "because".

I cannot write it without saying this stupid nonsense in my head...

Beautiful Elegant Cats Are Usually Slow Eaters.

The Bastard
(Lord Potato, Fri 1 Jul 2011, 10:54, 5 replies)

Have a couple of these to start...
Two-Way Propositions in german

an, auf, hinter, in, neben, uber, unter, vor, zwischen.
Thank you Mrs Beaumont!

Haynes Motorcycle Manuals Dewey decimal no: 629.28775

Too many years working part time in a library, I can still remember dewey decimal classification for most non-fiction books. Not obsolete but not as relevant with all the interwebs!

Shame I can't remember what day it is!
(DangerFlange Chamone Mother Hubbard, Fri 1 Jul 2011, 10:42, 1 reply)

560932
was the phone number of my first secret crush in 1981. Of course I never ever dared to call her, but I spent so much time with my finger hovering over the dial, thinking "shall I? SHALL I?" that her number will be in my head forever. Saw her again at a school reunion last year and out of all the girls she was the only one who is still hot and smart and likeable after all these years. Sigh.
( account88888 former cynic, converted to kindness, Fri 1 Jul 2011, 10:28, 7 replies)

Not my obsolete skill, but I know some people...
...with 1sts in a humanities subject...

(runs and hides)
( prince-igor si tacuisses, philosophus mansisses, Fri 1 Jul 2011, 10:25, 1 reply)

I remember the 16 different ways of saying "the" Germans have.
Der, die, das, die, den, die, das, die, des, der, des, der, dem, der, dem, den.
Each set of 4 applying to Neuter, Accusative, Genitive and Dative.
I struggled manfully with these to the Germans, when I finally met real ones, and they thought I was mental, they don't bother with any of it, just using a basic "duh".
Most useless shit I learnt in my life, and Monday's brekkies is a mystery.
(Bear Pookie The Frankly Challenged. Halloween is coming to town., Fri 1 Jul 2011, 10:23, 4 replies)