This link seems to provide a bigger list:
http://www.gaarde.org/acronyms/?lookup=A
Here's some of my favorites:
BOHICA - Bend Over, Here It Comes Again
DLTDHYWTGLSY - Don't Let The Door Hit Ya Where The Good Lord Split Ya
HILIACACLO - Help I Lapsed Into A Coma And Can't Log Off
ILTNMMAMOTCHYCFAPMSFTJ - I'd Like To Nominate Mike Meyers As Moderator Of This Conference. Honestly, You Couldn't Find A Person More Suited For The Job
PMIGBOM - Put Mind In Gear, Before Opening Mouth!
ROTFLMAOWTIME - Rolling On The Floor Laughing My A$$ Off With Tears In My Eyes