 The McCartneys ' guest appearance received mixed reactions from critics . Warren Martyn and Adrian Wood , the authors of I Can 't Believe It 's a Bigger and Better Updated Unofficial Simpsons Guide , called it a " superb " performance . Singer , however , thought their cameo was poorly integrated into the show , and <unk> thought it seemed " a little forced " . IGN ranked McCartney 's performance in this episode , along with Ringo Starr 's performance in " Brush with Greatness " , and George Harrison 's performance in " Homer 's Barbershop Quartet " , as the tenth best guest appearance in The Simpsons ' history . They added that " Although none of these appearances were really large , the fact that the most popular band of all time appeared on The Simpsons is a large statement on the popularity and importance of the show . " Simon Crerar of Times Online named Paul and Linda McCartney 's performance in the episode as one of the thirty @-@ three " funniest Simpsons cameos ever " , and Larry <unk> and Mike Errico of Blender listed it as the eighth best band cameo in the show 's history . 
