Airheads

Airheads is a 1994 American crimecomedy film written by Rich Wilkes and directed by Michael Lehmann. It stars Brendan Fraser, Steve Buscemi and Adam Sandler as a band of loser musicians who stage a hijacking of a radio station in order to get airplay for their demo recording. Joe Mantegna, Michael McKean, Ernie Hudson and Michael Richards play supporting roles. It marks Sandlers first role in a 20th Century Fox film.

Once inside, laid back DJ Ian The Shark begins talking with them on the air. Station Manager Milo overhears them and intervenes but Ian continues broadcasting. After Milo insults Rex, he and Chazz pull out realistic looking water pistols and demand airplay. After setting up an old reeltoreel for the demo, the tape begins to play but is quickly destroyed when the player malfunctions. The guys try to run but Doug Beech, the stations accountant, had already called the police and they see the building is surrounded.They negotiate with the police who are now tasked to find Kayla who has a cassette of the demo. Since the station never went off the air, news of the hostage crisis travels quickly and numerous hard rockmetal fans begin showing up outside the radio station interfering with police. A SWAT team has also arrived whose leader prefers using force over negotiation tactics. His team secretly passes a gun through a roof vent to Beech who has been hiding in the air ducts. During the crisis, it is revealed that Milo had secretly signed a deal to change KPPXs format to Adult Contemporary, which includes having to fire Ian and most of the other employees. When this comes out, Ian and a few employees side with the band and turn against Milo. ........

Source: Wikipedia