If you've never had the chance to read Watchmen, or want to give it a runthrough before the movie comes out, you can watch the entire motion comic here . Though my bandwidth here prevents me from watching any of it, I've seen the first few and I know they're the actual book. I don't know if they would make watching the movie itself more enjoyable, but it'll give you a chance to get brushed up with the book or see if you'd like it.
So yeah, that's a nice little treat. I guess it is LONG though. Eh, you got 6 weeks to get through it if you want.
(from I Read Comics)