Interesting....pay-per-view to the pc....they have the IMAX Hi-DEF's for download for $20 CDN not sure what they're charging in the States as the page recognizes my country code and retailors everything it seems.
Amazon sells the IMAX films for 15.00 and if you buy enough then shipping is free so I'm not sure how popular this will become since most cable/sat services are entrenched in the on-demand pay-per-view public already