Urgh! A Music War - 1981

Perhaps the finest concert film ever made, this 1981 film is comprised of live footage gathered from various venues around the world and includes everything from Klaus Nomi and Gary Neuman to the Police, X Los Angeles and Dead Kennedys. It starts off with music and never strays, giving you act after awesome act (with the exception, of course, of the reggae, which all sucks no matter who it is). Above is an excerpt, as there's no trailer per se - but I think you'll find Toyah Willcox better than any trailer could possibly convey. Eat it up mother fuckers!

First Name: Carmen - 1983 - France

Yet another Godard, but this one much less appreciated, if not seen. This adaptation of the opera Carmen features the title woman in the role of terrorist Carmen X, who falls for a policeman guarding the bank that her cell is planning to rob. Interspersed is footage of a small orchestra playing Beethoven.

Pierrot le Fou - 1965 - France

What's nice about this trailer is that it adequately captures the madness that is the movie. There's an actual dialogue attempted between trailer and audience and it kind of works.