Walter Montego: Two of my favorite endgames on the 10x8 board are Archbishop vs. Bishop + Knight, which is a mate in 202 for the Archbishop, shown here:

http://www.gothicchess.com/endings/kakbn/game.htm

And Chancellor and Pawn vs. Chancellor, a mate in 140, shown here:

http://www.gothicchess.com/endings/kcpkc/game.htm

Incredibly complex endings that really let you appreciate whatever your favorite 10x8 game is that gets you to these points. Even more interestingly, programs cannot play these endings properly without these precomputed tablebases. Strong human players have a better chance of winning the endings more rapidly than programs that do not have the tablebases, another one of the ironies of the world of computer programs.