A classic ad. It's nice that these two "rivals" can have a friendly feud. Also, I do think some people drink both Pepsi and Coke. Nice, light hearted ad.
The following year the same Coke guy tries a Pepsi and gets caught. Great ad and the music that's playing just fits. 20 years later and its great.
The one that really started it all. This ad really started how we view Super Bowl ads. That reason is because when this ad aired during Super Bowl 18, I think the results of the ad is why the Super Bowl ads have become so popular. It aired only once, but its lasting impression has lasted a lifetime.
These are only a few of my favorites. What are some of yours?