Wow, I wrote the same exact thing you did on Google, "Jennifer Aniston smoking weed" and this was the first link they provided.

http://www.cannabisculture.com/articles/2404.html

Anyways, good find man, I would've never thought Jennifer or Brad smoked herb...in fact, I thought of them as the complete opposite. The snobby, anti mj, wine drinkin preppies.