Woah i had a weird glitch. I went to pick up my girlfriend denise and cops were chasing me, and right when the cutscene starts when she comes out of the house i get busted. so im at the police station, but the game is still in, lets say, "cutscene mode" its like in widescreen. So i cant do anything, i cant get to the main menu to quit the game, i cant save, i can only walk around the map.
that really pissed me off since i had to restart from some earlier missions.. so word of advice, don't visit your girlfriend if you're about to get busted and haven't saved your game!