Lends his voice to the roofer, Ray. The episode even includes an ad-libbed meta-joke over the credits referencing Romano’s own show, Everybody Loves Raymond .
The episode's tension builds as Homer's family and friends begin to suspect that Ray is merely a figment of his imagination. Key "clues" planted by the writers include: [S16E16] Don't Fear the Roofer
"The Simpsons" Don't Fear the Roofer (TV Episode 2005) - IMDb Lends his voice to the roofer, Ray
For more detailed trivia and reviews, you can check the episode's IMDb page or its overview on the Simpsons Wiki . Lends his voice to the roofer