Star Tracker
Sibley Birds (Depending of course on where you live. It is for North American birds.)
RSS Hub
Gadget Box
Animoog (If you are a musician.)
BeJeweled 2
SayIt
iSpeech Translator
theScore
Battery Lover
Yellow Pages
Waze
Neatly for Twitter
Blaq (Twitter)
Crackberry
Songza
Remember (Already on BlackBerry; really powerfully integrated into the OS; memos, lists, flagged emails, attach files, calendar integration, and also records voice notes)
CBC news
Soundhound
Kobo
Slacker Radio
Hype Machine
Sound Cloud
Relax Book Nature
Reddit in Motion
Skype
Wikitude
Color ID
Say it
Crackle
Citytv Video
360 panorama
Photo studio
Code Muncher (alternative to Smart Tags app)
Games
Angry Birds Space
Angry Birds Seasons
Angry Birds Star Wars
Eufloria
Jet pack joyride
Autumn dynasty
Pew Pew
Run in the Crowd
Sector Striker
Beach Buggy Blitz
Sudoku Unlimited
Tiny bird
Chess wise
Modern Combat 4
Asphalt 7
Hangman
Alien Hive
Spark Dash
Sporos
Plant vs Zombies
Alpha Zero
Cut the Rope
That's some of the apps and games I tried out. I hope this helps.