Yep, I love that one. Even my 90 year old grandmother had a ball playing with it. Flight control is also good for $1.
I've recently started playing Paper Toss. It's pretty good, but it's got nothing on Peggle. I also like fiddling around with iDaft. Utterly pointless, but it's a neat way to fill time and annoy people.
I don't know what it's called (because I don't have an iPhone), but my friend has this app that tells you a bunch of random facts that will (sometimes) amaze you. i.e. beer commercials never show a person actually drinking a beer.
PocketTunes. Music and stations from around the world, including all of Sirius/XM Radio (if you have a sub)
Pandora - Music Sportacular - Scores, Stats, etc iShoot Lite - Game Brick Free - Game Shazam - Music (if you dont know the song) myWireless - Cingular account info Gmail - Email all these are free, i dont really care to pay for apps. as of yet.