This is one of the beauties of jailbreaking your iPhone – you can get just about any feature the competing devices have. Just yesterday, we covered a Cydia tweak that lets you unlock your device the same way one would unlock a Samsung Galaxy S phone. Today, a new Cydia Tweak called TV Tube Sleep has appeared which gives you a TV Tube animation when you turn off your iPhone screen using the sleep button. This is exactly like how Nexus S, the first Gingerbread phone from Google, animates when you turn its display off. It looks freaking awesome.
TV Tube Sleep is available in Cydia for $0.99 in BigBoss repo. To see the animation, just press the power button on your iPhone.
Oh, and this is the original Gingerbread animation. Long live the iPhone Dev community!