Beatmaker 2
Netflix
NanoStudio
Podcasts
Splice
WSOP
Clear
YouTube
Bite SMS (I know you meant non jailbroken apps but this app is just too good to not mention.)
PS after seeing flipboard on my ipad how can you people use it on your phones?! I mean only one article per page?!
Yeah one article per page on iPhones. Also JB apps are also fine. My favourite JB app is Dream board.