The latest Southern Comfort campaign should be included in the dictionary entry for cool. There are other commercials out there that are also very cool but they don't depict coolness in the same way these ads do. Here is the newest commercial from the series:
Check out my other Southern Comfort favorite ads here and here.
The only campaign that can compete in coolness with this one that I can think of, is the Jack and Jones campaign starring Christopher Walken. Watch the ads here, here and here.