Personal highlights:
NES launched in the US
City Connection
Gauntlet
HardBall! -- this is the game that The Princess Bride opens with, and it's a good baseball game to boot
Apple II version of The Oregon Trail that most people are familiar with (it originally was released in 1971, but only on Minnesota public schools' systems)
Paperboy
Summer Games II
Super Mario Bros.
Thexder
Where in the World is Carmem Sandiego?
Winter Games