[jeffool]

  -Mint.com
  -Audiobooks

A bunch of others as well, but I think that's the only one not mentioned so far. Add in extra votes for Google's (Gmail, Voice, Talk, Music, Maps, G+, etc.) and the official Twitter app; it works well for me. And "Audiobooks" is only a Librivox front-end, really. I love it, though. I often listen to books as I drift off to sleep.

And games? GOD I love games.:

  -Game Dev Story (Or any Kairosoft game with a flavor that floats your boat,
   but I think most agree GDS is a good place to start.)
  -Pirates and Traders
  -Plants vs Zombies
  -Archipelago