The Best Burger in New York - S4-E2
Trivia: The Goliath National Bank logo can be seen at the end of the end credits.
Trivia: Barney uses the line "Call me crazy, but child actors were way better back in the 80s." Neil Patrick Harris was a child actor in the 80s, most known for his role in Doogie Howser, M.D. (1989). After reciting his line, a brief clip of the theme song from Doogie Howser plays.
The Best Burger in New York - S4-E2
Trivia: When the gang are in a taxi on their way to one of the burger joints with a green door and a red neon sign, look closely at Cobie Smulders' eyes whilst Barney is talking to Lily about Goliath National Bank - she is almost falling asleep when her character is not meant to be sleepy. Watch as her eyes widen, desperately trying to stay awake.