After heckling Judge Krusty at the "Ugliest Dog in Springfield" contest, Moe Szyzlak finds his true calling - becoming a judge for American Idol. But it's a judge-eat-judge world out there, and his new duties mean Homer must spend more time at home, a prospect which soon turns sour on Marge. It's "Judge Me Tender", the finale of The Simpsons' 21st season, and, it must be said, a pretty lackluster way to end the season after what had been a stellar run of episodes.
Moe makes a name for himself with his acid tongue, being called on to adjudicate a variety of competitions (one disappointed contestant hangs himself from his bonsai tree). The Uncreative Artist Agency wants Moe to work for them ("You're mean, you're funny, and you're not British!"), and after running through a list of reality shows (including "Old People Try To Figure Out Computers", "Somali Pirate Apprentice" and "Are You Fatter Than A Fifth Grader?"), offer him a position as a judge on American Idol (and not, as Moe initially hoped for, Armenian Idol (which does actually exist as part of the worldwide Idol franchise, believe it or not). Soon, Moe finds himself under the wing of Simon Cowell, who advises Moe not to become the "mean judge". On live television, Moe finds out why - the hard way.