The Call of the Simpsons episode, along with his four other appearances on "The Simpsons", the best guest appearance in the show's history. "The Call of the Simpsons" received mixed reviews from critics. Warren Martyn and Adrian Wood, the authors of the book "I Can't Believe It's a Bigger and Better Updated Unofficial Simpsons Guide", both criticized and praised the episode saying: "This episode is a bit less than the sum of its parts. The early stuff at the RV Round-Up is much better than the main camping story, although there's some nice Marge-Lisa bonding, and who could resist Maggie and the bears?" In a
The Simpsons: Testify Branson," which pays tribute to all the washed-up celebrities of yesteryear. ... So even if the show is no longer appointment viewing in your house, this CD definitely warrants another trip to Springfield." The Simpsons: Testify The Simpsons: Testify is an album that features songs from the animated television series "The Simpsons". It was released on September 18, 2007. It includes appearances by artists such as Jackson Browne, Shawn Colvin, David Byrne, The B-52's, The Baha Men, NRBQ and "Weird Al" Yankovic, and an alternate version of the end credits performed by Los Lobos. Ricky Gervais, Steve Buscemi and Kelsey