OMG, I love MegaMan! 8D
Seriously, when I first played the older platformer ones, I thought they were so fun, especially how when you killed a boss you get their abilities. Then, I played the Battle Network ones and loved those more. I think I've played all 1 through 6 of that series, but not the Starforce series. The MegaMan Zero series were fun, too. I've played all of them except for the first one; 3 was my favorite. =3

Oh, and I like Harpuia and Forte most! ^_~