Supernatural's biggest stars are apparently too famous to remember Richard Speight Jr and Rob Benedict.
November 13, 2013
Artist Shepard Fairey is featured.
May 8, 2012
Christiane Amanpour is featured.
May 7, 2012
Featured: Bill Maher.
October 3, 2011
"South Park" creators Matt Stone and Trey Parker talk to New York University freshmen.
October 4, 2010
John Legend talks to students at Howard University about college affordability, financial aid and obstacles that he faced.
November 12, 2007
Nobel Peace Prize winner Dr. Muhammad Yunus substitute teaches a class.
November 5, 2007
Liberian president Ellen Johnson Sirleaf substitute teaches a class.
October 29, 2007
Don Cheadle is a substitute teacher for a class.
October 1, 2007
Annie Lennox is a substitute teacher for a class.
November 6, 2006
Author Jhumpa Lahiri (“The Namesake”) sits in for a class's professor.
May 9, 2006
Larry and Laurie David surprise UCLA students when they drop by to guest teach a class on global warming. They also give away the hybrid car Larry drives on “Curb Your Enthusiasm.”
March 13, 2006
George Clinton serves as a substitute professor at Boston's Berklee College of Music, where he fields questions from students.
March 6, 2006
Highlights from the series, which has surprised college students with guest professors such as Madonna, Kanye West, Nas, Marilyn Manson and Sen. John McCain (R-Ariz.).
Download the TV Guide app for iPhone, iPad and Android!