Just got back from Green Lantern. I really enjoyed it! Hey, it's a COMIC BOOK!!! It's not supposed to be Patton or The Sound of Music. (And Gweimer, I'll bet I was following Green Lantern before your son was even born. Tell him to chill.)
Story followed the comic book line reasonably well, great special effects, enough action to go around - I thought it was fun, and they set it up for a sequel. I'll go see it if the sequel comes out.