O. M. F. G. I don't know what I'm going to be missing. Climbing from San Andreas, drive-bys from San Andreas and Vice City Stories, the city looks beautiful, the gun sounds are awesome, it's even got that GTA2 style HUD and it doesn't even look to spoil the game a bit.
Rockstar must be proud that the game they worked out for more or less 5 years worked out better or as they expected.
*Runs off to see more gameplay videos*