Much like the premiere PS3-to-PS Vita franchise cross-over, Ucharted: Golden Abyss, LittleBigPlanet on the PS Vita is impressive. The visual fidelity of the big boy console version translates beautifully to the PS Vita's hi-res screen - bringing closer to home the idea that Sony may actually be getting up and making cross-platform play a reality.
LittleBigPlanet is not necessarily the PS3's flagship graphical showpiece, but it does bring about a unique art style that lost some of its charm in the previous PSP incarnation. On the PS Vita, though, LBP is just as immersive and creative as you know it to be on your HDTV, with an added emphasis on gyroscopic and touch gaming.
I got to play through a typical LBP level that demonstrated the tilt functionality of the handheld to swing platforms closer and farther away from Sackboy as needed. Other times, touch controls gave way for a spinning motion to traverse the environments.
The newly added tilt and gyroscope control schemes were nothing revolutionary, but being able to carry around a PS3-worthy edition of LittleBigPlanet in your man/woman purse (yeah, the PS Vita is a bit big for normal-sized pockets) more than makes up for it.
Unfortunately, I wasn't able to get hands-on with any cross-play functionality or to see how creating levels works on the system exactly. Considering the quick progression to demo the game on the show floor, though, there wouldn't have been time enough to fully explore that aspect of the game anyway.