Watched the new characters trailer earlier. Looks absolutely great . Literally can't wait for this game, the graphics and gameplay look amazing, the characters very interesting. Not sure how it's going to be like playing as three characters, but it's something different and I'm all for that.
New challenge: Re-play GTA IV but turn off the map, the little annoying icon in the corner of the screen which means you're hardly looking where you are going. It makes you learn the map and where to go during missions and also turns a normal gun fight, in which you know where everyone is, into a tense fire fight when the unexpected bad guy will be lurking with an uzi.