Movie Poster Design 101

I found this interesting: the unnamed site author of onesheetdesign.com offers his portfolio of movie posters, complete with comps, commentary, and advice on how to break into the movie poster business. Required, according to OneSheet, is a strong background in graphic design. It's intruiging to see the evolution and choices made with some of these...

UPDATE: Additionally, for a completely different take on the one sheet, check out these movie posters from Poland [via kottke]