The scene is probably the most famous in the entire film, and not even because Matt Damon is in it.
So EuroTrip was written by three guys I went to college with, Alec Shaffer, Jeff Berg, and Dave Mandell.
Early in the movie Eurotrip, a band starts playing at a high school party which is fronted by a bald and pierced Matt Damon.
Matt Damon recently explained in a Reddit AMA that he was already in Prague filming when his old college friends, who wrote Eurotrip, called him up and asked him to be in it.