Disagree if you must, but GTA is the best game to ever be made.
I god Ballad of Gay Tony when it just came out and I was taking my time doing the missions because apperantly its short.
I havent done a mission in it in ages, I just got so caught up and addicted to the Police Chases.
Epic stuff, and just when you get bored of it and got to turn it off, you decide 'Im gona stab that hobo before I go to bed'
And then the police come and before you know it you spend the next hour killing Police Men.
Alot of people use to say to me during the days of San Andreas, that the best thing is getting a chase of the cops.
I always thought 'Nah thas BS The best part is the missions'
But now I see how good it is just running about getting a chase, going to strip clubs and killing people, jumping out of helicopters.
I even re-created the Bradley Dieing Scene from Eastenders last night

Shot a police man in the head with a Shot Gun, got a 3 Star Wanted Level and got a copter to the top of a building.
The police men jumped out of a copter and chased me on the top of the building and then I jumped lol
So for GTA 5 I hope they put more work into making the Police Chases and the other 'Off Mission' game play, even more better than it is you know?
So whats your favourite thing to do in Grand Theft Auto?