Super Football - a late release by Atari that is really impressive. The game incorporates punts, kickoffs and field goals that are usually left out of football games from this era. Compared to other football games on the Atari this one wins in the graphics department. You will need the manual to keep track of all the different plays and plan to pass it back and forth with the second player.
Frankenstein's Monster - a great game from Data Age who are sadly more well known for releasing stinkers. If you enjoy Pitfall! I recommend tracking this one down. This game contains one of the coolest Game Over screens and the horror theme is always a welcome addition to any collection. Might make a good double-feature night pairing with Haunted House
Moonsweeper - Imagic made quite a few great games for the Atari and this one typically gets overlooked (Atlantis and Demon Attack were huge sellers back in the day after all). Pseudo 3-d graphics and intense shooting action make this one a winner. I give this one bonus points for the game-over ditty of Swing Low Sweet Chariot. Classy
Fast Eddie - Fox published some interesting titles and for reasons I can't explain I've spent the most time playing this one. It's just fun. Grab a friend and see who can get the highest score.