It's all about the software. Macs are PC's nowadays.
Avid can be run on both windows and Macs. So not really a great argument that Windows can't do pro editing. There's a reason Hollywood movies are edited more often on it than FCP the Mac only standard.
This movie is pretty recent.
http://www.studiodaily.com/filmandvi...list/8063.html
Here's one on FCP in movies
http://marylandfilms.com/2007/07/edi...llywood-films/