El Destructo of the Atari Age forums writes:

Finally got around to posting some relatively high-quality footage of vintage Atari commercials:

• Atari 2600 - "Only Atari Makes The World's Most Popular Home Videogames"
• Atari 2600 - Yar's Revenge
• Atari 400 - Conversational French / Missile Command
• Atari 800 - Stock Analysis / Space Invaders
• Atari 400 - States and Capitals / Basketball
• Atari "Prism" ad - Discover Atari

Source is a VHS recording of an over-the-air broadcast. These ads were shown during "Computers Are People Too," a TV special that aired in 1982.

You die-hard Atari fans may remember seeing these on the BRiTiSH Atari 8-bit site (Remember that one?) where I originally posted them as blocky QuickTime movies in 1995 or so.

Enjoy!

Links to all the videos and the ensuing discussion can be found at the Atari Age forums.