Stay well away from Pool of Radiance. It's really boring hack and slash, it did little more then made my hand tired and numb, and the story (what there is of it) was really crappy. Graphics were quite nice, but ultimately it wasn't worth the money spent (not even close).
If you want something in a similar vein (though it's not D&D, much less 3rd Ed.) try Dungeon Siege. It's not much of a thinking man's game, but it's beautiful and amazingly addictive - sort of like having a juiced up engine for Diablo, but even less in the way of plot or puzzles then that game (if that's possible). Still, it's so beautiful and so fun, I don't even mind.
I hear good things about Ice Wind Dale II, but haven't played it. It uses the BG II engine, but with 3rd Ed. rules. BG II has elements of 3rd Edition (a Sorcerer class, for instance), but is really just a modified 2nd Ed. game (albeit, the best CRPG I've ever played!). IWDII is more hack and slash then BGII, but good hack and slash, so I hear.