Super High Me (2007)

Director: Michael Blieden (some stand up specials, but wrote and starred in Melvin goes to dinner which is fantastic)
Stars: Doug Benson (Mostly a stand up comedian, has had small roles on many comedic efforts)
YesNoSoso: 1

Surprisingly funny documentary filmed almost as a joke. Doug Benson used to make this joke in his stand up that instead eating McDonalds for 30 days like Morgan Spurlock, he would smoke pot for 30 days. Then him and his buddy Michael Blieden decided to actually do it. He didn't imbibe any alcohol and didn't blaze for 30 days before smoking all day every day for 30 days. He took a number of tests (SAT, memory, pychic, a full physical) during both phases and did standup about 3 nights a week. The movie is very funny and also contains interesting information about the subject of Californias "legal" marijuana.
IMDB
Wikipedia