As mentioned in NewMusicBox.org by Molly Sheridan,
G. Schirmer, Inc./Associated Music Publishers, Inc. has launched SchirmerOnDemand, an online service that allows registered users to view, and in some case print, select perusal scores from the catalogs of nearly 50 composers. The focus of the service so far is mostly on operas and works for orchestra and wind ensemble by 20th- and 21st-century composers on the Schirmer roster, but the company says its entire catalog of 5,000 works by 300 composers is projected to be online within the next few years.
Molly gives a pretty good commentary about her experience with SchirmerOnDemand. I will sign up for this *right now* and let you guys know how this works.