Just came back from this, it about met my expectations. Although it was pretty good, it probably was my least favorite of the four films. More thoughts below...
What I LikedIndy: It was great to see the man in the hat back in action. I'm
so glad they didn't fill the film with "Hey, I'm old" jokes, which made him much more believable. Still has those rock solid fists.

Mutt: I actually though Shia did a pretty good job. I agree with JJ, his scenes with Indy were the best, the back and forth banter between them was great.
Dovchenko: Great replacement for Pat Roach, kind of a cross between Vogel and the German Mechanic, and his death scene was
easily the best of the movie. Covered in ants, ants crawl into mouth,
then ants drag him into anthill? Nice.
Chase Sequences: For the most part, very well done, with the Marshall college chase being a standout. Despite the overuse of CGI and Mutt's
ridiculous swinging from the vines, I thought the jungle chase was very cool. I would've liked to see more of the Jungle Cutter though.
The "Alien" Factor: If you look at the film as partly a homage to 50's sci-fi films, I think the alien stuff is a lot more tolerable. The way they tied it in with the City Of Gold was neat.
What I Didn't LikeMarion: Seemed kind of shoehorned in, and really, didn't do a whole lot. Her banter with Indy was priceless, and the Soviet getting annoyed was great.
Irina: I actually thought this was a great performance by Cate Blanchett, but the whole "psychic" aspect of her character was really stupid, as we never got to see it in action, other than hooking Indy up to the time machine from Napoleon Dynamite.
Nuclear Bomb: Can someone tell me how a 58 year old man can survive a nuclear explosion by climbing inside a refrigerator, getting thrown into the air, crashing, and climbing out, relatively unscathed?
Overall, I'd give it a solid 8/10. Good chase sequences, cool new characters, and a decent story. I'll probably see it again in the theater, just cause it's Indy.