When Andy is in the taxi driving to the meeting with Robert De Niro, his phone beeps from the message Maggie sends. But when he reads the message, you can see his Motorola phone is on silent.
The song featured in this episode is, 'Wouldn't it be good' by, Nik Kershaw - it reached No. 4 in the U.K. Top 40 in January 1984.
[After Mother with sick son gets Andy to promise to visit him in hospital]
Robert Lindsay: Bit weird isn't it?
Andy: Bit presumptuous.
Robert Lindsay: No, I mean it's a bit weird she didn't ask me.
Robert Lindsay: I'm on the set of GBH, I'm in my trailer, knock on the door, guess who it is. Go on, guess.
Sick child: Um...
Robert Lindsay: Alan Bleasdale.
Sick child: I don't know who that is.
Robert Lindsay: Aw, fuck off!
Singin' in the Rain
At the hospital, Robert Lindsay sings two songs from the 1952 film [and later a musical] Singin' in the Rain. The songs are 'Make 'em laugh' and 'Broadway rhythm'.
Agent: (to Robert De Niro) Have you... ever driven a taxi for real?
Andy's agent is referring to the film 'Taxi Driver' in which Robert de Niro played the character Travis Bickle.
Alan Bleasdale's GBH
The anecdote Robert Lindsay is trying to tell at the hospital is supposedly from the TV show GBH. Alan Bleasdale is that show's creator/writer.