I’ve got Flikster, which tells me which movies are around, and I like it.
I also have Where and Sherpa, the two apps that tell you what’s around for food, entertainment, shopping, or gas at your current location. Of these, I think I like Sherpa better. I haven’t used either much; around Minneapolis, I pretty much know what’s available where I’m going. Sherpa was fun in Hawaii, though - I like its rotating UI better than Where’s. That said, Where looks like it has more information.
I’ve downloaded two calorie/diet tracking apps, but haven’t used either yet, so I can’t comment.
For games, I’ve got Jewels (which is fun, but I think I might be getting bored with it) and the Abduction! demo (which is made of awesome). I also have a Bubble Burst Free game, which I need to get rid of.
I replaced the built-in mail client on my MyTouch 3g with the K-9 mail app, and it’s great. Plus, the icon is K9 from Dr. Who, which I think is beyond cool.
I did download TasKiller, but I haven’t needed to use it yet, so nothing to report there.
I also downloaded the Weather Channel app - it seems OK, but there’s probably better ones out there. Where also has a weather button; I should check that out.
Other than that, the phone came with a YouTube app, a music app, a GMail app, and some other apps that I don’t use much. I guess I’m just not one of those that uses my phone for a ton of stuff, hey?