The only anime that I watch that no one else does (that other people would actually be interested in watching) is Galaxy Angel. Then again, Aerith's Knight and Creeping Shadow watched it (and enjoyed it) as well since I got them interested in it.

I guess that leaves Bomberman Jetters and F-Zero: GP Legends although I doubt anyone besides me would be interested in those (especially JTrix who abhors the F-Zero anime. I know the animation is quite ugly but the story is quite good. It's also quite neat seeing the stories behind most of the F-Zero racers).