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 Guy Appel then asked for permission from "Simpsons" executive producers Matt Groening, James L. Brooks and Al Jean to use their characters. This was approved; Appel was previously a writer-producer on "The Simpsons" for four seasons, and retained his former colleagues' trust. Dan Castellaneta, Julie Kavner, Nancy Cartwright, Yeardley Smith and Hank Azaria guest star as their "Simpsons" characters, but Harry Shearer, the final main cast member of "The Simpsons", was unavailable. Asked how he felt about the crossover, Shearer replied, "Matter and anti-matter." "Family Guy" writers pitched several storylines for the crossover, including one in which the Griffins stay with