I am a rather big fan of the GTA Series.
San Andreas being the first one on my list with so many things to do.
GTA IV as the first one for Graphics.
Looking at the trailer of GTA 5, I can see the graphics part of things has certainly beaten IV.
I am an aviation enthusiast so one main activity i wish to be in GTA 5 is to fly! I personally think, they should include a small flying school and work your way up to be able to access a bigger Intl. Airport.
I am not one of those people that get's a game and randomly goes around killing every pedestrian they see. I like to explore the map/world and with the city and countryside in this game, i can see i will have the utter most adventures. I love car chases, with the Police and trying to evade them.