I went to the Louisville Arcade Expo Saturday, and picked up a Sears Team Play Basketball handheld. handheldmuseum.com has a picture of a very similar game, though the art on mine is a bit different. It says it's licensed from Coleco Head To Head Basketball.
Also, I got to play an Atari Video Pinball Model C-380, which is a dedicated console. This one wasn't for sale, but I definitely found it more interesting than your typical Pong system. Pong Story describes it as using "possibly a microcontroller" labelled C011500-1.