It aired in the United States on Fox on May 15, 2016, and includes a three-minute live-animated segment in which viewers were able to ask Homer Simpson questions.
In this episode, Homer develops a fear of public speaking, so he takes a improvisation class while Bart destroys his treehouse after learning Ralph has a better one.
His original plan is to repeat the comedy speech he did every year, but most of his punchlines have already been used or are incredibly offensive, including jokes about Lenny's grandmother who is sick.
This makes him so nervous that he passes out on-stage, causing him to develop glossophobia and start hallucinating his household appliances mocking him.
They decide to form their own stand-up comedy troupe at Moe's Tavern, where Homer's act is acclaimed by the public and the critics.
A Homer live segment was considered as early as 2007, as a potential promotion for The Simpsons Movie on The Tonight Show, but was ultimately decided against.
Simpsons director David Silverman handled on-air animation control for the character, due to his experience on the show and establishing the rules on how Homer acts.
[1] As a means of verifying the real-time nature of the show, then-recent events were worked into the segment, with Homer making jokes about Drake's appearance on Saturday Night Live on the East Coast feed and a fight during a Toronto Blue Jays vs Texas Rangers game on the West Coast feed.
Honestly, underdeveloped, gag-happy storylines are a sad fact of life in modern-day 'Simpsons' but 'Simprovised' proves that—even when compressed—a simple story well told and rooted in the characters can be both funny and affecting.