Android

I have more than this but most are just soundboards and useless stuff.

My useful ones:
Pandora - internet streaming radio (shortcut, and widget, i use the widget)
MP3 download - download music for free
Cubed Music Player - shows up in the app market as the number 3 when you search, puts all my music with album art its great!
Car Collection background - great cars and pics, using the cadillac cien right now
advanced task killer - useful, but does hang up every once in a while
retro clock - widget to give you a digital clock, also includes retro date widget that I don't use
accuweather - came on the phones home screen
Chuck Norris facts - or I'll roundhouse kick you to the face
Bubble - pretty accurate level
Coin flip - I don't carry coins, useful for me
FreeCaddie - golfing distances for club choice also explains my bubble app for the greens sometimes :-)
Jewels - game
lightning bug - when traveling soothing noises and alarm clock its customizable too
picsay - add word bubbles to pics and other mod
pkt auctions - manage ebay
stopwatch - lap times
tv.com - some clips to pass the time
united states constitution - USA!, USA!
bounce - another game
where's my droid - in case I need to find it and its on silent or vibrate