I'll pass, thanks.
Fallout 2, 3, and New Vegas, Baldur's Gate 2, DAO, Oblivion, The Witcher 2, Jade Empire, Knights of the Old Republic, Gothic 1 and 3... to say nothing of JRPGs like Thousand Year Door, some of the Fire Emblems, Golden Sun, Final Fantasy 7 (and probably others), Breath of Fire 3...
Ironically, though, not in the first Elder Scrolls game, "Arena".
EDIT: Thousand Year Door had the best arena out of all of those, by the way. You gonna get RAWKED!