SBRotator is compatible with iOS 5 (Cydia)

A couple of days SBRotator was made compatible with iOS 5, but with the untethered jailbreak we have not had time to tell thee.

With Springboard SBRotator you rotate your iPhone as if it were an iPad. Applications will also turn have applications that do not function by default and turn the lock screen.

You can download for $ 2.99 in Cydia.
The'll find BigBoss repo.
You need to have done the jailbreak.