Transformers 2 arrived in Princeton last Sunday evening, and have been filming a 3-day shoot here on the Princeton University campus. According to the Daily Princetonian, three of the main stars (Shia Labeouf, Megan Fox, and Ramon Rodriguez) were all on location for the shoot. Pictures and video below the jump.

From what this reporter could gather, director Michael Bay was calling the library a “classroom” and the University chapel a “dorm.” Nevertheless, here are some shots of the on-set action, on Monday.

Youtube clip of first take of Shia/Sam walking out of Firestone Library scene:

[youtube http://www.youtube.com/watch?v=OCfm5EbcBTs]

Some random shots of Shia Labeouf, as well as one of Shia walking with director Michael Bay, as they discuss that oh-so-difficult “rushing out of the library/classroom and looking confused” scene::