Gamasutra interview with Steve Sullivan, ILM on their production convergence (2007)
http://www.gamasutra.com/php-bin/news_index.php?story=14789
(don't miss the embedded links to the IGDA and Hollywood & Games Conference in that article)
Gamasutra follow-up article on ILM (2007)
http://www.gamasutra.com/php-bin/news_index.php?story=15061
Here's a resource page from MasterNewMedia.org with a collection of info and links re Machinima
http://www.masternewmedia.org/news/2006/10/10/independent_filmmaking_sets_stage_insidehtm
Vfxpro article on film previz with machinima (2006)
http://vfxworld.com/?sa=adv&code=911ac78c&atype=articles&id=2773&page=1
DigitalContentProducer article (2005)Â on Machinima for film previz
http://digitalcontentproducer.com/dcc/revfeat/video_realtime_real_part_2/
Gamasutra article on "beyond machinima" - not previz but more toward transmedia
http://www.gamasutra.com/view/feature/1802/beyond_machinima_rudy_poat_and_.php?print=1