To break the boredom during a multi-day stretch without wounded, Radar turns disc jockey with a recently-arrived shipment of records. The music becomes more important than ever when the wounded arrive in full force, overwhelming the hospital.
Attention, all personnel! The following tropes are on your hit parade:
- AB Negative: One of the patients requires AB Negative, and the only source they're able to find for a transfusion is a sergeant from a bomb disposal unit who's on R&R...and totally drunk.
- Afraid of Needles: The bomb disposal sergeant sobers up awfully fast as soon as he sees the transfusion needle.
- Artistic License – History: Potter mentions falling in love with Doris Day "about a dozen years ago" when he went to see Les Brown and His Band of Renown in New York. The band and Day recorded "Sentimental Journey" in 1945 — no more than eight years earlier than the episode's possible setting.
- Becoming the Mask: Despite needing Klinger to coach him at first due to a lack of self-confidence, Radar soon gets awfully comfortable in his persona of camp DJ, adapting a line of slangy patter and even swapping his fatigues for a Hawaiian shirt and sunglasses.
- Calvinball: Double Cranko, the game Hawkeye and B.J. play with cards, checkers, and chess pieces. At the end of the episode, after losing, Potter asks B.J. if Hawkeye is playing by the rules and gets "what rules?" as a response.Hawkeye: Bishops are worth three jacks, checkers are wild, and you have to be 21 or over to open.
- Department of Redundancy Department: Radar starts to get tired after several hours straight of DJ duty:Radar: You know, uh, this is Radar, mike-side talking to you over the mike...And you folks have been so kind with your requests and your kind requests...
- Funny Background Event: During their game of Double Cranko, Hawkeye "crowns" one of B.J.'s kings with a hammer, sending one of his pawns flying into his martini glass. B.J. is later seen picking it out while refilling.
- Incessant Music Madness: Col. Potter requests "Sentimental Journey" twenty-three times in a row, driving everyone else crazy.
- Large Ham Radio: Radar becomes this while playing DJ.
- Love Nostalgia Song: "Sentimental Journey" serves as a reminder for Col. Potter of the time he fell in love with Doris Day.
- No Sympathy: Margaret has no sympathy when Charles grumbles about having to be moved out of the Swamp.Margaret: Charles, you know what this is? (moves fingers)Charles: What?Margaret: It's the world's smallest violin, and it's playing just for you.
- Overused Running Gag: Col. Potter requests "Sentimental Journey" so often that the entire camp is sick of it pretty quickly. By the end of the episode, even he's gotten tired of it.
- Shout-Out: The episode is titled after a popular '50s radio/TV program of the same name.
- Source Music: The records broadcast over the PA system serve as background music for most scenes.
- What Did I Do Last Night?: Played with. Sgt. Gribble actually thought that he had disabled a bomb at the 4077th the night before, rather than being a blood donor.
