Brad Pitt & a Shopping Cart Full of Books

I only have a brief snippet from last night's dream, although I think it was fairly involved. The only part I remember is pushing a big shopping cart of books around narrow streets - it seemed like I was in an old city, like Rome or London, but I think it was supposed to be a college town. I ran into Brad Pitt and another famous person (don't remember who), and I started talking to him like he was a regular dude. I felt proud of myself for not losing my cool around a famous person. Meanwhile, I'm still pushing this cart of books around - in the streets and in and out of shops. In one of the shops something goes wrong - I spill/break/steal something, and have to make a hasty exit. I think that Brad Pitt comes with me.