My favourite cover that I have
is of "Should I Stay or Should I Go" being covered by Ice Cube and Mack-10.

It puts a whole new persepective on the song.
(Zapiola zip-zap-zop, Thu 28 Oct 2010, 15:15, 2 replies, latest was 15 years ago)

Mine is either the Richard Cheese version of Gin and Juice by Snoop Dogg
or his version of Closer by NIN
( Vipros. clever got me this far, then tricky got me in, Thu 28 Oct 2010, 15:19, Reply)

Interesting
Not heard those.

I'm sure somewhere I've got a cover version of Olivers Army by Elvis Costello being performed by a Russian reggae band who clearly have no idea what the lyrics mean, or how they should be pronounced / sung.
(Zapiola zip-zap-zop, Thu 28 Oct 2010, 15:21, Reply)

I love his cover of Down With The Sickness
but my favourite serious cover is Stevie Wonder's We Can Work It Out.
( Kitty v1.0 desperately naive, Thu 28 Oct 2010, 15:24, Reply)

Bizarrely
I'm quite liking the Embrace version of D12 "How Come" currently

But personal favourite is the Biffy Clyro version of "Umbrella"
( the mighty badger Aphrodite, on a bar stool, by your side, Thu 28 Oct 2010, 15:24, Reply)