01:32 Feb 6, 2010 

Hey, I think they're all great, but I'm too pooped out to select a particular one!

19:24 Feb 5, 2010 

If your audience speaks AE and you say somebody's "knackered," nobody will have a clue what it means. (Maybe something like "all tuckered out"?) And "buggered" might be understood, but in a rather specific sense.

19:19 Feb 5, 2010 

1. exhausted, worn out, tired out, drained, beat (slang), done in (informal), all in (slang), buggered (Brit. slang), debilitated, prostrated, enervated, ready to drop, dog-tired (informal), zonked (slang), dead tired, dead beat (slang) I was absolutely knackered at the end of the match.
2. broken, not working, out of order, not functioning, done in (informal), ruined, buggered (Brit. slang), worn out, on the blink (slang), on its last legs My tape player's knackered.

Suit yourself