In the 2009 episode “Meet the Pamhousers”, after performing “She Wants to Dance with Me” by Rick Astley (voiced by himself), guests at what was then Quillsville Central High School (later Kenneth ‘Babyface’ Edmunds from 1994 to 2020, now Lee Kelso High School) prom saw talking lobster Heather Willis (voiced by Ava Zinn) sing “Billie Jean”.

This was going to air as a season 6 episode but after learning about the passing of Michael Jackson in June 2009, the episode was rushed and moved to August 2009 as a tribute to Michael Jackson.