Old arcade games like X-men, TMNT, The Simpsons, Mortal Kombat series. I just don't have the patience for them that I used to.
And Ren and Stimpy: Stimpy's Invention for Sega Genesis. I used to love it when I was a kid, but I suppose Stimpy's farts just aren't as amusing 20 years later.
It'll be awhile before I figure out how to do one of these. :P