There isn't much that is good about this movie. The stuff that is worth your time is still victim of breakneck editing. Anything better than crap lasts about 10 seconds, if you're lucky. And, sadly, that's no exaggeration. Then, after your 10 seconds are up, the focus shifts on someone or something else.
There is a good movie in there somewhere. Two good ones, actually. If Sommers just took his time and had not wanted to bust his load so quick, this has the potential to be a lot of fun. Joseph Gordon-Levitt as Cobra Commander is fun to watch. I've always loved Arnold Vosloo and in my opinion he is a vastly underused actor. His Zartan has a small but cool role. Just about all of the heroes are unlikable except Snake Eyes, whose awesome action scenes get snubbed by shaky editing. Snake Eyes' arch enemy, Storm Shadow, is pretty cool as long as his mouth is shut. And some vehicular combat can get exciting for tiny momentary spurts.
Ultimately, G.I. Joe: The Rise of Cobra is a huge mess. The plot is really simple, albeit utterly inane, and gets cluttered up with crammed action scenes edited into Swiss cheese. If you found every TV spot and trailer for G.I. Joe and just ran them together for a two-hour loop, you'd have a better experience than I did paying 10 dollars to see it. Rent it, if you must. It's not worth the overpriced popcorn.