The first time I ever heard a 'mash-up' was several years ago when local DJ Enoch posted a crazy 'mash-up' mix on Myspace. (Yes, Myspace!). Since then we've seen and heard videos of some ridiculous pairings. I enjoy this one myself - Avenged Sevenfold vs Modest Mouse - 'Float On' meets 'Almost Easy'!  Check it out!