Grand Theft Auto, despite all the controversy surrounding it..is an excellent game.  It teaches you the importance of saving money (those guns don't buy themselves).  The importance of patience (you can't just beat people up whenever you want..you have to WAIT for the cops to leave).  The importance of friendships (you'll never get to the mob boss without a few petty thug friends).

 

Buy it.  Don't worry about the third one, but Vice City and San Andreas are both a must.  And just thinking about IV being released gives me an instant hard-on.