Dom and Jane put together their 2007 "Cool" Hall of Fame, with the help of their listeners. These are people who just drip cool, based on their body of work and overall persona.
In no particular order:
10: Jack Nicholson
9: Clint Eastwood
8: Sean Connery
7: Paul Newman
6: Dean Martin
5: Bruce Willis
4: Steve McQueen
3: Jackie O
2: Marlon Brando
1: Johnny Cash