Magnolia Easter Egg - Kubrick Reference for Cruise Character

When Tom Cruise's character is about to start his 'Seduce & Destroy' seminar, he uses the Straus piece "Thus Spake Zarathustra" for his entrance.

That piece, of course, is most readily identified with the movie '2001: A Space Odyssey' by Stanley Kubrick, whom Cruise had recently worked with in 'Eyes Wide Shut'

This was quite apparently a little nod to the master by Paul Thomas Anderson, the director.