Mega Man IV: I can see why people badmouth this one a little; it's not quite as epic feeling, but I had a lot of fun with it and will play it again, like the others.
Monster Hunter 3 Ultimate: Never, ever stop playing a game at a hard boss. Finish the hard boss while you still remember how to play, and then take a break. I decided to pick this up again and try to finish over the summer, but I realized where I stopped and I also realized I have NO IDEA what I'm doing or how to play or what a hunting strategy is, or anything at all. I am flailing around like a heavily-armed toddler.
I may just wait for Monster Hunter 4.