Stayed up 3 night in a row playing GTA IV the other day, and it was either stunts at the Airport, play Cops 'n Crooks (RP type deal, no Gamemode), or just finding that Pagani Zonda mixed with a Lamborghini Diablo ST, in which mah friends call a Lambo

Very fun game, indeed.
The only downside is that there's massive Airliners and a few private jets at the airport; which are un-accessable. =C
At least there's some Blackhawks and the Maverickes. . . =D