Forgot my old Macintosh. I loved playing Mac Pro Football by Broderbund where you could design your own team and plays. Needless to say, my Boys kicked azz!
Oldies but goldies - Gorf, Phoenix, Galaxians, Scramble, Defender & Tutankhaman. All simple games with very few buttons to take care of - defender excepted (i always preferred the joystick version).
I haven't played for a long time, but at the time when Commodore 64 was the most popular home computer, I liked these one's:
Agent USA
Blue Max
Bomb Jack
Buggy Boy
California Games
Football Manager (Soccer)
Great Giana Sisters
Great American Cross-Country Road Race
Hat Trick
Rambo
Skool Daze
Spy Hunter
Summer Games
Track and Field
Who Dares Wins
Winter Games