The first one is interesting:
http://youtube.com/watch?v=2dVbuMn7s...20theft%20auto
The seocnd one, What happens when GTA is in real life:
http://youtube.com/watch?v=DazLyRMov...20theft%20auto
And, finally, Grand Theft Auto: Lego City!:
http://youtube.com/watch?v=VMSKTogpR...20theft%20auto