21. Favorite Licensed RPG. Star Wars in all of its incarnations.
The West End version was instrumental in proving that a game could successfully expand the world of an existing franchise. The Saga version has my favorite, most comfortable rules system. But now the Fantasy Flight version is doing nifty things with dice mechanics and is part of a much larger license including the marvelous X-Wing miniature skirmish game and some cool upcoming board and minis games. I dig RPGs connected to other styles of game.
Also, like D&D and superhero games, Star Wars is just the right paradigm for action-oriented roleplaying, which is still my favorite basic style. It’s also easy to include horror, tactical battles, and investigation, my close runners-up.