In alphabetical order...
- Air Display - use your tablet as an additional screen for your PC / laptop!
- Angry Birds - well, it'd be rude not to.
- Camera Launcher - make use of the Camera, even if Google don't want you to!
- Kindle - Google Play Books AND Kindle? What more could you want. Show your Kindle owning friends the future.
- Lux - the backlight management on stock is rather aggressive, get control back with this great app!
- Screebl Beta - stop the device timing out while you're holding it, with Jelly Bean you can disable the notification icon too. Great!
- Skype / Google Plus - video calls / hangouts work lovely on the Nexus 7!
- Stickmount - use USB sticks on the device!
- Vplayer - my video playback app of choice.
- WeatherPro HD - I love my weather, and the tablet version works great on the Nexus 7.