That '70s Show - Season 7 Episode 21 : 2120 So. Michigan Ave. 2006

In preparation for pursuing a teaching career, Eric receives his high school transcripts and discovers that he received an incomplete in gym class. He enrolls in a summer gym course and learns that his new P.E. teacher is none other than Casey Kelso! Kelso and Fez move into their new apartment and compete over who gets the master bedroom. While they do this, Red exacts his revenge for the messes they’ve created at his house over the years.