In Japan, anime's a two-way street -- meaning the sheer number of things that get made into anime, or that get adapted into other things from anime, boggles the mind. Crossovers go on constantly between anime, manga, light novels, live-action adaptations, merchandising efforts, themed events, and ... you guessed it ... video games.
A full list of anime created from video game properties (e.g., Devil May Cry, shown here -- compare prices) would probably exhaust everyone involved. But a list of the best of the bunch, the ones most worth tracking down whether or not you've played the games in question ... well, welcome to our new Anime.About.com feature.