not just the ones in game but everyone of them ever released.
my second favorite has got to be the one where marius goes into tal rashas tomb and tyrael is there. the third is probably the diablo 1 opening cinematic.
my most favorite one is probably the one where the wanderer is on that wagon with his mouth sewed shut and then he drops the soul stone. that was awesome, and thats how i see the world of sanctuary, all muddy and old like that which we saw in that cinematic. http://www.youtube.com/watch?v=_SJYzJy_iHo
thats what i am referring to, and i like with some of the comments on the video, two of which i posted below.
"Their new trailers... especially the new Diablo III cinematic teaser (look it up), just don't do justice.
The girl talking doesn't have the gritty torture that this guy does, not to mention... she seems almost totally and completely unrelated. This is the hero from the first Diablo struggling to contain a demon inside of him, and he's obviously losing. What the hell happened to the third game in the series? It'll be fun, but it just feels like something got lost along the lines."
"One of Blizzard's best... so atmospheric; the music, the imagery, the voice acting, everything is perfect. And it doesn't have that nerdy, hyper-cheesy, over-the-topness that crept into their cinematics around the time of LoD. Even their new stuff for Starcraft II and D3 is all flash and no substance. As this trailer shows, chills and thrills don't come from the quality or flashiness of the SFX, but from the intelligence and subtleness of the writing and direction."
My favorite real cinematic, from hellfire. At first I was terrified by the audio, then LOL when HE RUNS! LOL HE FUCKING RUNS AFTER UNLEASHING NA-KRUL LOLOLOL!!!! Probably the all time favorite cinematic to date: Hope u [email protected];)
Ending of Diablo 1. It's very intimate. Your character's hands are shown up close removing the Soulstone, we see Albrecht revert to his original form (not the best special effect, but still pretty stunning for its time) and then he has this hacking cough and dies off. And after you drive the Soulstone into your head and scream, I love how it shows that gargoyle statue with it's huge eyes as if it's staring right at you and pondering what you just did.