As a very mediocre guitar player, watching this video completely vaporized my libido. In it Alex Chadwick with the Chicago Music Exchange riffles through 100 consecutive rock riffs without pause, executing each perfectly in quick succession over the course of 12 or so minutes. The performance runs through famous ditties from classic acts like the Beatles and Rolling Stones, to more modern bands such as Cake and Modest Mouse. If you have a few minutes to burn today this would certainly be a fun way to do it.