The EA games discount that gog.com ran a little while ago allowed me to buy some of my favorite games from the past (Theme Hospital!, Wing Commander!) for a pretty good price. The problem with gog.com for Mac users is that all games are Windows-only. Or at least they were. Gog has teamed with Alun Bestor, the creator of Boxer to bring the games to OSX.
Boxer makes it super easy to bundle old DOS games into neat .app packages; ready to play with the click of a button. Bringing that to gog.com means I can simply download the games and start playing. Awesome!