Just a shout out to GOG.com, who sell DRM-free "Good Old Games" at good prices.
I've been happy with the games I've bought from them. They sell DOS games (Like Duke Nukem 3D, Redneck Rampage), and Windows games, but I haven't really looked into other platforms. Whats really nice is that the DOS games are wrapped in DOSBox so they run under Windows. Yeah, I know you can do it yourself, but then you have to get the DOS game and the latest official patches and tweak DOSBox.
They also have Myst, Riven, Serious Sam, the earlier Fallout and Unreal games, along with a bunch of others, ready for download.
