Not sure if it's the correct trope or not, but the songs "Buttercup" by the Foundations and "Is She Really Going Out With Him?" by Joe Jackson were both brought back from obscurity by the movie and "Buttercup" in particualr is now a regular on oldies station's playlists.
Star-Making Role: Cameron Diaz and Ben Stiller became bankable leads after the runaway success of this film.
What Could Have Been: The film's original ending had Ted getting hit by a bus right after Mary chooses him over her other suitors (basically turning the film into a Shoot the Shaggy Dog story). The Farrelly Brothers decided this would be too dark of a way to end the film, so they went with a more traditional happy ending.