I didn't type out the whole name because technically this isn't an official review. On the advice of my father (who knows my deep-rooted aversion to aliens) I didn't expose myself to the visuals of the final third of the film (except for the happy ending) so I can't really go in depth on all of that.
My thoughts are these:
The whole alien plot is pretty creepy and stupid.
Cate Blanchett does a pretty good job as a Russian
Marion is BAAAAACK!
and finally....Mutt Williams is even better than I was expecting. He's not a stupid sidekick- he knows what he's doing and really, at some points, out-Indy's Indiana himself! That was a pretty nice twist, and it makes sense.
I mean, what else would you expect from the son of Marion Ravenwood and Indiana Jones?
So hopefully if they go through with a 5th Indy movie (as the buzz is reporting), they'll be smart enough to give Mutt even more screen time, and pick a plot that is not nearly as disturbing as stupid aliens.
EDIT: Oh, and I should also say that there's some pretty good cinematography and cool use of shadows. It's Spielberg, so I shouldn't be surprised. He's a master with that stuff.