In a deleted scene from this episode, as the gang talk about lies their parents told them, Ted reveals that his mom told him he was allergic to bacon. It then goes into a flashback from when Ted accidentally ate bacon in college and thought he was going to die. Since this scene was cut, they re-did this storyline in season 9 when Ted eats a lifetime's worth of bacon to make up for all he missed out on.
Barney's bedroom has the exact same layout as Eric Forman's from that 70's show.
The set of Eric Foreman's bedroom from 'That 70s Show' was re purposed as Barney's childhood room.
In this episode, Robin mentions Robert De Niro in Cape Fear. In the film, Robert De Niro's character has a tattoo on his chest that says "Loretta". Incidentally, Barney's mother's name is also Loretta.
In his childhood room, Barney has either a Macintosh Classic (originally released in 1990) or a Macintosh Classic II (originally released in 1992).