I've recently been playing Comix Zone and I'm really enjoying it. It's still to this day very original, the way you play inside a comic book, jumping from frame to frame, defeating enemies drawn by the villain's hand and choosing which frame to jump to, giving you different paths through each stage, is very cool.
Each stage is a real comic book page. It's an innovative game design to this day.
The only game I can think of that has done something similar is FPS XIII, which uses cel-shading and text balloons to create a comic book aesthetic, but Comix Zone goes further in my opinion; not only does the game look like a comic book, but you play inside one.
And what about the grunge soundtrack? I've always been a fan of this style and to see a game with this sound is fantastic. There's an official bonus CD with versions of tracks from the game played by a band, and it sounds exactly like a grunge band, albeit a bit generic.
I've included some links, to the soundtrack, the manual and the bonus comic book published in a British magazine.
Billy Times Games also recently released a hack that doubles or triples the protagonist's damage.
Manual
Comic Book
Soundtrack