Though if I want to actually think about the question instead of using this as a D2 discussion topic... other games I'd consider if D2 PvM is out of the question. Well, even if it isn't, really.
Super Puzzle Fighter 2: Turbo
Tetris Attack
Halo
Halo 2
I'd like to say DMC3 but I stopped playing somewhere during DMD mode so I'm sure someone's beaten that. Halo and Halo 2 are largely considered due to the lack of fanbase they have here, though I am pretty good at them.
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No problem!
This is a cute and pop genocide of love!