The first ever game I played after Super Mario (who hasn't?) and arcade pac-man, was Pokemon Red. Until now I still love the Pokemon series, although I haven't played in more than 2 years since my DS broke.
I played nearly all mainstream games from Generation I to Generation IV (only lacking the original Green Version and Platinum), and I loved each one of them, especially Diamond.
Not so sure about the Generation V games though... somehow I don't see it as much of a breakthrough as D/P/Pl, and people are saying the new games are shit. I r emember when I bought an original copy of Diamond for 50 euros more than 2 years ago. :razz: