With Iron Man, the latest Marvel installment, it seems Marvel Comics are proving to be a valuble source material for Sci-Fi Movies.
As well as the below films to look forward to there is X-Men origins: Wolverine out late this year, followed by a quiet 2009 (correct me if i'm wrong, but isn't spidey 4 starting filming then?)
Then in 2010 there's Iron Man two, along with X-Men Origins: Magneto.
In 2011 there's The First Avenger: Captain America, followed by The Avengers.
Sit back and take that in.
In the mean time I suggest reading Ultimate Marvel. This is the "Modern" version of the Ret-conned full Marvel Universe, making it a lot more simpler and funny than the original (Sam Raimi appears making a Spidey film in Ultimate Spiderman)
But although Ultimate Spiderman is geared towards Teens, The Ultimates (Avengers) is a lot more mature and gritty, along with Ultimate X-Men.
I'd recommend buying compilation graphic novels from Borders rather than buying individual comics. Ultimates is good as it's written as a whole, Ultimates 3 has just come out.
Here's the new art from the Ultimate line.
Sam the man Li