Saw it and enjoyed it quite a bit. Good little adventure flick.
Annoyed me how with some references they assumed the common folk wouldn't get they'd have the characters go all "holy crap, it's X from Y!!!" while other references everyone just brushes off.
Anyway, the biggest surprise was how much my missus loved the movie... she's still talking about it 3 days later. She hates both action movies and movies with too much CG.... so Spielberg did something right.
I wasn't going to include spoilers, however someones already mentioned it.... the Gundam fight at the end... man o man. I totally saw it as a giant middle finger to the live TF movies. Transformers totally don't need to look like weird shrapnel spiders at all!
Here's a great music clip from Gunship, it's the RP1 story but based on the book. So don't click unless you want spoilers:
GUNSHIP - Art3mis & Parzival