There were some great ads back in the day for the NES...though there were some cheesy ones too. My favorite is definitely one of the funniest ads I have ever seen...one of the original Legend of Zelda TV spots. Check it out here:

http://www.njminteractive.com/LoZ_com.mpeg

*wicky wicky wick*

So whats your favorite? (pics or clips most definitely welcome).