In addition to what polyfractal mentioned, I would also look at these:
- Adobe Reader
- Netflix
- GoVoice (Google Voice client)
- Speed Searcher
- ShopSavvy
- Tasks (by Telerik)
- Shazam (Once Mango is out, this won't be necessary)
- Project Emporia
- LiveStrong's Calorie Tracker (Normally $2.99 but free until end of August)
Games - AlphaJax, Wordament, Orb, Unity