I agree with the "screw storyline" people. I bought Demigod because I wanted to play a multiplayer game. "Bla bla, you are a candidate for godhood, and you must kick ass to rise up" is all the story I need.
Too many times multiplayer games have ignored their playerbase and focused too much on the story. I don't care. Just point me in the right direction, and I make up the story as I go in my head. I don't even watch intros.
My favorite games include Quake Wars (Story: "Aliens are coming or something, defend the world/kill them"), Continuum (Story: "You're in space!!!!"), Unreal Tournament (Story: "There is a tournament... you kill people").
Just look at UT3. "Oh, we have a full story mode now! Whoopie..." Nobody cares. I want a multiplayer game. They should have scrapped the story mode with their high-res videos nobody watched, and used that time to make the GUI less horrid, amongst other things.
Sure, multiplayer games can have a little story to get you going, but I think a nudge is fine. Session based multiplayer games that reset after every session are awesome, but not very compatible with this terrible idea of a "cinema-feel" of a game. It's like GTA4 vs Saint's Row2. You can put on your suit and play GTA4, or you can have a laugh-fest dicking around in Saint's Row2. But don't take my word for it:
http://www.escapistmagazine.com/videos/view/zero-punctuation/312-Saints-Row-2
Sure, I hear Saint's Row2 has a story, but I don't care. I've skipped every part of it to get to the fun part: actually playing.