The adventures of Batman and Robin on SEGA CD was great, an extra episode for The Animated Series.
Likewise Batman Brave and the Bold for Wii was extra four episodes of that show with a good and solid Way Forward beat-em-up and standard charm. The DS version of the game was easier, but enough to remind me of the NES game in a "easier" charming way with the best final boss fight of any Batman game (don't spoil it for yourself, just play the game to find out).
The three games listed above need and deserve far more love.
Batman for ZX Spectrum is still great, it wasn't what anyone expected but still a great game to change things at the time and stood out for it's isometric view. The non-Batman remake for modern PCs is good too.