I've always enjoyed the Mega Man series. I think Mega Man X was one of the first games I ever played. I remember having trouble even with the intro and having to try over and over again. I love the storyline and the universe it builds. The gameplay is also amazing; I love being able to use the powers of the bosses I've defeated.

The originals are crazy difficult though, even more so than the X series. I don't think I've completed any of them!

I'm also a big fan of Resident Evil 4 and Devil May Cry 3.