If you've got a Dreamcast, or a Dreamcast emulator then definatley get
"Record of Lodoss War". It's like Diablo 2 hack n' slash, has a crapload of items, and you can add your own stat points to every armor n' weapon you get.
Has a lot of dungeons, some nice boss fights, and two optional boss fights that will make you grind like theres no tomorrow just to survive.
Its based off the Anime (Original), which was still bad ass.
One of my favorite games ever, and one of the best "Diablo Clones" ever made.