depends on which years old school games you're talkiing about !

the titles you're placed in your poll are games that appeared before the nes came out !
so what year are we limited to ?

yeah burger time was stupid for me as well that's why i don't mention it.
DK was awesome but too hard at the time ! at least for me !
PAC MAN i didn't like either. talk about MS PACMAN and now i'll be ok with it ! maybe even the 3D one on the nes !
pong was awesome when the game started to make the ball get faster and faster after every hit, now that was fun to play ! but gets boring too fast !

BREAKTHRU was an awesome game as well !
here is my list of games that were fun back in 1980 !

GALAGA
GALAXIAN
SPACE INVADERS
DONKEY KONG
TETRIS
PONG (soccer, tennis versions)
BREAKTHRU (new one was called ARKANOID)
BURGER TIME
PITFALL (i remeber playing this awesome game on my first PC, the TRS-80 with TAPES)

so much to mention...
anyone else has a list of those that came early in 1980 ?