[quote name='TheLongshot']Many times, things that are ahead of their time are failures because of that. The true worth is only realized later on.[/QUOTE]
Yep. Many other Sega products would fit the bill, especially the Sega Channel.
As for games, can only think of two at the moment: Ys Book I and II for TurboGrafx CD (for its large-scale anime graphics and use of audio), and Phantasy Star Online for (of course) Dreamcast (for being a very early and well-designed console MMO).