Appears as a ghost in Family Trees to tell Shawn about his birth mother, who wasn't Virna, but some stripper.
Appears at the end of Brave New World, but remains unseen by everyone. He comments on what everyone is doing, and everyone remembers him fondly. After Jack says that Chet taught Shawn & himself that "Money doesn't make you rich, life does", something Chet immediately refutes. After he realizes that Jack wants to do the right thing which is helping people, Chet is content with his son's decision. Before he leaves to go back to heaven, Chet pinches Rachel's butt, which confused her due to the fact that no one was behind her.