Whoops, I thought a meter was slightly less than that...
My favorite generation...it's difficult to say. The only one I could rule out is gen 1, as it's a classic but really isn't my favorite. Same with gen 2--it really didn't make as big of an impact as other generations, though gold and silver are awesome. Gen 3 isn't probably in the running, either. It has to live with the shame of FR/LG, and hoenn is good but overrated. Gen 5 just feels a bit off for me when compared to the others, with competitive disappointment and linear games. Gen 6 is looking very bright, but gen 4....well, it's just about perfect. Fantastic main series games, and it also has the kickass remakes. I'd say gen 1 is my least favorite, but gen 5 ranks below gen 3 for me because it has a worse main series game than spinoff game--though BW2 are awesome and outmatch the horrors of FRLG.
I always remember loving stadium and stadium 2, but I never really owned them. Good times playing stadium with my friends though. I really...didn't like colosseum or XD, to be honest. When I played it, the dated battle mechanics and bad start really turned me off. I'd have to say PBR, and man, I love that game.