I made (and will SOMEDAY resume work on) a Yoshi's Island based comic strip. In MS Paint (for all you people making fun of MS Paint, it's only crappy if you don't know how to use it). It has brought minutes of joy to literally dozens on people on other forums and web-games.
I also started (and again hope to resume one of these days) a fan-game, like Monkey Island.
Both on my webpage.
I've also combined my two all-time favorite game series (Mario and Lemmings) into a Mario terrain style for a Lemmings clone. The Lemmings themselves are even dressed up like little Marios.
,,,what?