You can check out the RPG News (RPGN) that's posted in the [url=http://www.roleplayerguild.com/forums/1]news[/url] board. They always feature new and stable RPs in various genres.

Otherwise, look at the Interest Checks to see what suits your fancy. There are plenty of fantasy/supernatural RPs out there, and a smattering of sci-fi ones, it all depends on what specifics you're interested in.