Centipede, and then later that Sega motorcycle thingy you could sit on and ride. The kids were really little at the time, and I'd take 'em with me to the arcade at the Tacoma B&I. Guys would snigger when the mommy with the kids in tow waited patiently for a chance to ride. Used to be fun to watch guys post high scores and swagger off, then get on and wipe 'em off the board.
If anyone remembers the B&I back then, it was SO cool. Ivan the gorilla and all.
I'm now the proud owner of an arcade version of Space Odyssey - or at least a big ol' cabinet that houses the parts of it. Now if I could just get it to work.