I saw it last Monday, and I really really enjoyed it. I've highly recommended it to anyone who'd listen.
The action was great, but I loved the humor injections. They didn't seem out of place at all. Then small clever things made me laugh. The best one was the grandfather telling young Ben the story. When there is a scene of the pyramids as Mr. Gates tells the story, we see his eye over the broken pyrimid. That was perfect, and very cute.
Plus, Sean Bean in a movie is an extra treat. I honestly dind't know he was in there until I saw it.
I also agree with pixiedude that Diane Kruger looks like Shannon Kenny. I didn't think about it until reading your post, but I can totally see it now.