Trivia

The billboard with Peter in bed was extracted from Paul Rudd's 2006 Rolling Stone photo shoot.

Sydney's dog is named Anwar, after Anwar Sadat, the Egyptian president who was murdered in 1981. Following the movie's release, one of Sadat's daughters sued the producers because comparing a human to a dog is a serious insult in Egyptian culture. The lawyer representing Sadat's daughter requested a formal apology from the U.S. Embassy in Egypt, which never came.

Jason Segel and Paul Rudd reprise their roles in a video shown on Rush's Time Machine tour. The duo manage to get backstage and meet the band after the performance.

J.K. Simmons, who plays Paul Rudd and Andy Samberg's father, is only 14 years older than Rudd.

The cameo of Matt Walsh as the impatient golfer comes from his original character in the famous "Ass Pennies" skit performed under the comedy group The Upright Citizens Brigade. In addition to being the same actor, he wears the exact outfit from the original 1990 skit in Power Marketing (1998).

OK Go: during the credits, as the band in the wedding ceremony.