i like gog. most games are @ $5, if i remember it right they carry fallout 1&2, jagged alliance(1&2?), arcanum, and a bunch of classics.
but hey, maybe they're just moving out of beta phase.
in our forum, we have a thread dedicated to digital downloads, we would post games that are on sale, and gog is one of the sites that we monitor.
and yes, you should see the virtual shelf, its pretty neat