4.On The Office, Dwight tells us a very ominous Schrute wedding tradition, and he and Angela do it when they get married seasons later.
6.On The Office, Michael has an Italian flag on his desk for St. Patrick's Day.
7.Also on The Office, for St. Patrick's Day, the water in the office watercooler is green.
8.On New Girl, the alternatives to intercourse that Jess tells her students are pretty stellar.
9.On Friends, when Chandler is sad about breaking up with Janice and he's singing Lionel Richie, he is also holding Janice's shoe that he stole from her earlier.
10.On The Office, Michael says that he is separating the trash into "whites and colors" for recycling. In an earlier season, you can see that Dunder Mifflin Scranton has different recycling bins for whites and colors.
On Friends, the dry cleaner references his own movie.
36.On New Girl, when everyone but Jess is voting on whether Jess should sleep with Ryan, Nick is the only one who doesn't raise his hand in favor.
37.On The Office, Michael, Dwight, and Jim drive to the Utica branch, and Michael and Dwight try to steal the copier. Later, in Season 5, the Utica copier is padlocked when we see it.
38.On Friends, 9/11 is never explicitly addressed, but there are tributes to the victims and heroes of the terrorist attack throughout episodes that aired in late fall 2001.
39.On New Girl, Nick learns Schmidt dry-cleans his socks three episodes before Schmidt reveals he doesn't know how to do laundry.
40.On The Office, when Michael is sleeping at his desk and everyone is trying to change all the clocks so they can leave early, Dwight runs to change the clock in Michael's car without any shoes on so that his footsteps don't wake up Michael.
41.On Friends, there's a potato in Central Perk at one point.
42.And finally, on New Girl, bears are mentioned in every episode.