D/ling it right now. So happy about this since my disk version refuses to work on my newer PC with Windows 7 64. The only way to get it to work before was jumping through various 3rd party patch hoops or hex-editing.
If you never played it, and have an interest in turn-based tactical strategy, you should definitely check it out.
Gonna get my TBS/RPG skills back up to snuff for Xcom. Wewt.
Also, endorsed by Dave, if that means anything for you.