My largest project since March of '92 has been for First Advantage Corporation, working on a system to enable manual fulfillment of background screening tasks.
Screenshots are here.

Prior to that, I worked for Pioneer Digital Technologies, on an interactive television administration system for cable operators.  Screenshots are here.

Blaster! -- an Asteroids-type game for the Mac.  I wrote this in one week using C++ and the OpenGL library.  Download it here. (Beware: I wrote this several years ago, and your machine may be too fast for it.)