7x23/24 "The One with Monica and Chandler's Wedding"

Joey gets a part in a movie and learns the art of enunciation (and therein spitting) from his famous co-star (Gary Oldman). He later finds out he is supposed to work on the day of Monica and Chandler's wedding. Chandler's fear of commitment catches up to him and he runs away from his wedding. Phoebe finds someone's positive pregnancy test in the bathroom trash, and assumes it is Monica's. Joey learns he is only supposed to shoot one scene before he can leave for the wedding, but when his co-star turns up drunk it seems Joey won't make it to the ceremony. Chandler is found but, upon overhearing Phoebe discuss Monica's assumed pregnancy, disappears again. Luckily he turns up again, used to the idea of becoming a father. Joey arrives just in time, still in costume from his war movie. Monica and Chandler become husband and wife, getting married to the tune of the song "Everlong" by Foo Fighters. In the end, it's revealed that the pregnancy test belonged to Rachel.