Our ISP here (Windstream, with a local monopoly) subscribes to ESPN 360 which means we can watch pretty much any ESPN selection free online. Every single online commercial break features the same Dos Equis commercial with The Most Interesting Man in the World. Even after 100 times that same commercial is great. It's a mix of Ron Burgundy with those snazzy Old Spice commercials. I'd never seen any others until writing this post.
Here is a YouTube montage of all of the Dos Equis commercials with The Most Interesting Man in the World. The commercial I've seen 100 times is the last of the bunch. Enjoy!