Hmmm. Tough call. I guess this would probably be my list:
1. Shigeru Miyamoto - He's created many of my favorite franchises, and still to this day keeps making great games on a regular basis. I love Shiggy!
2. Koji Igarashi - He revolutionized Castlevania with Symphony of the Night, and has kept up making quality Castlevania-games ever since. I like him.
3. Masahiro Sakurai - Even though I'm not the biggest Kirby-fan(I don't dislike it, but I don't particularly like it much either), he did produce the Super Smash Bros.-series, and for that I just have to love him :P