I liked the GL movie. It had some weird parts, but overall enjoyable. That said, I did not like the casting of Ryan Reynolds as Hal or the woman who played Carrol Ferris (I can't remember the actress's name). I don't think they were horrible actors, but they just didn't have the look of the characters, or portray them very well (although that was probably the script's fault). I've always liked Hal (although I like Alan Scott and Guy Gardner better when it comes to my favorite GL) but Reynolds played him as too much of an arrogant pretty boy, which seems to be a character Reynolds usually plas. Now, Hal has definately been an arrogant guy, but I never got the feeling that he spent hours looking at himself in the mirror, a vibe which Reynolds seemed to give off.
Still, like I said, I enjoyed it. Sinestro was played well, and I actually thought the CG for Kilowag and Tomar Re looked cool. Its not a great superhero movie, but it was ok, and definately better than some.