If you like that Dark Alliance game, you may be interested in the other games based on the same engine. There's Baldur's Gate: Dark Alliance 2, which continues the story and is better than the first game in many ways. There's the two games based on Everquest, called Champions of Norrath and Champions: Return to Arms. These differ slightly from the Baldur's Gate games in that many of the maps are generated as you play, so the levels are different each playthrough. And they have online capabilities, allowing up to four players cooperating which is pretty interesting. The first one is very bugridden though, so get the second if you're going to try these as it's much more stable.
Then there's The Bard's Tale. A modern take on the classic games, this one really is a must-play especially if your're an RPG fan! The game is a giant piss-take on the entire RPG-genre, having fun with all the common RPG clichés, featuring a selfish protagonist who would watch a village burn and loot it afterwards rather than try saving it. This game will have you in stitches throughout and is one I would definitely recommend.
There's also Fallout: Brotherhood of Steel, but I'm only mentioning it because it is also based on the engine originally used for Dark Alliance. This game is really horrible and should be avoided unless you really really have to play everything that is Fallout. You have been warned.