For those of us that are either too young to have played some of these games, or for those who never got a chance to, I have started a list of resources that should explain the gameplay, etc for some of these 'Classics':

Arkanoid

Wikipedia
Arkanoid.com

Berzerk

Wikipedia
MobyGames.com

Centipede

Wikipedia
Picture

Donkey Kong Jr

Wikipedia
Picture

Earl Weaver Baseball

Wikipedia

Empire Deluxe

ED: Internet Edition
Description
Strategies

Galaga or Galaxian

Wikipedia (Galaga)
Wikipedia (Galaxian)

Joust

Wikipedia

Jungle Hunt or Pitfall

Wikipedia (Jungle Hunt)
Wikipedia (Pitfall)

Gauntlet

Wikipedia

Gyruss

Wikipedia
RetroGames.com

Lemmings

Wikipedia
Lemmings Compendium

Miner 2049er

Wikipedia
ClassicGaming.com

Missile Command

Wikipedia

Moon Patrol

Wikipedia

Mr. Do

Wikipedia

Phoenix

Wikipedia

Omega Race

About Omega Race

Robotron: 2084

Wikipedia

Zaxxon

Wikipedia

Feel free to add to the list!

Ghost