I tried Diamond and Pearl just to see the new online trading system, but have never actually gotten into the games.
I really wanted to get the original red and blue versions of the games (for the gameboy/color) when pokemon was really big in the US (1998-1999 I think), but then my church said that pokemon were demonic and made everyone burn anything that had to do with it. (Video games, cards, plush toys, etc.)
Since then, I never got into the games, and don't know any of the pokemon after the first 151. I never the anime past where team rocket got a 3rd pokemon either, so I don't even know who won the first championship.