During JD's vision of Dani at his apartment, there's downey toilet paper everywhere. This is a knock at Zach Braff who had recently become the spokesman for the company
First time Dr. Kelso says his catchphrase "What has two thumbs and doesn't give a crap? (points his two thumbs towards himself) Bob Kelso...how ya doin?"
John C McGinley and Mike Starr (Mr. Iverson) previously appeared together as brothers in the 1994 episode of Frasier, S02E11 Seat Of Power.