I have a couple...
• When ascending stairs it must be my right foot that steps on the final step before the plateau or a change in direction

• When descending the stairs in my house (11 'straight' steps) i used to hum the riff from the Lightning Seeds 'Life Of Riley' - one note for each step. This annoyed me greatly.

• 10:49 and 22:49 are 'good' times on a clock. I like looking at a clock face that displays this time. I think it stems from my youth, back when XFM (104.9 FM) used to be good. I should've stopped this habit years ago.

• My Dad smokes outside, in the conservatory and garden. When finished he extinguishes his cigarette and wraps it up in a sheet of kitchen roll. He'll then walk in to the kitchen and place the bundle on the counter top less than 12 inches from the bin. When he had a pedal bin he used to place the bundle on top of the lid. It remains a mystery why he never actually throws it in the bin

• I like symmetry, not to the point where I have to touch something with both hands or bump my left elbow if i happen to bump my right to even it out. But, if i ever get a tattoo i will HAVE to have the exact same design on the opposite side of my body.
( applehead herp derp, Thu 8 Jul 2010, 7:46, 2 replies)

The Bin thing
is explainable if you have ever emptied an ashtray in to a bin without first checking that it is all properly out... by placing it on the side it will only scorch the counter if it goes.
(Bonzodog29 is an unemployed sponge of the worst kind, Thu 8 Jul 2010, 8:21, closed)

yeah
I suspect your dad was waiting to make sure it had cooled down before putting it in the bin. Same reason I end up with dead matches all over my lab bench (I don't want to chuck them in with waste that's likely covered in ethanol).
(xanthine, Thu 8 Jul 2010, 9:47, closed)