Peter's Progress

"Peter's Progress" is the 16th episode and the season finale of the seventh season of Family Guy. It originally aired on Fox in the United States on May 17, 2009. In the episode, a psychic reads Peter's palms and discovers he led a fascinating past life as Griffin Peterson, a dignified gentleman in 17th century England, who was the original founder of Quahog. The episode was written by Wellesley Wild and directed by Brian Iles. It received mixed reviews from critics for its storyline and many cultural references. According to Nielsen ratings, it was viewed in 7.33 million homes in its original airing. The episode featured guest performances by John Ross Bowie, Neil Patrick Harris, Brody Hutzler, Derwin Jordan, Keri Lynn Pratt, David Pressman, Josh Radnor, Martin Savage, Jason Segel, Alexander Siddig and Erik von Detten, along with several recurring guest voice actors for the series. This episode marks Cleveland Brown's final regular appearance on Family Guy until the episode 'He's Bla-ack!' in season 12 where he made his official return to the show.