At the risk of revealing myself as A) behind the times, and B) a complete tool, Iâ€™m going to share that Iâ€™ve recently gotten back into heavy exercise. At the gym, I usually listen to (hereâ€™s where the â€œcomplete toolâ€ part comes in) This American Life or some other talky podcast where I donâ€™t have to worry about (tool again) consistently high-energy beats. But praise be to Pittsburghâ€™s Greg Gillis, whose Night Ripper from 2006 is a (the behind the times part) mashup masterpiece that (tool) keeps my adrenaline PUMPED, man! For my money, Z-Trip is still the high-water mark of such guerrilla hip-hop-classic-rock-punk-pop-whatever mixing, but what Gillis does with the riffs from The Pixies, the Strokes and Weezer in â€œHold Upâ€ helps me burn 500 calories in two minutes. Girl Talkâ€™s newest, Feed the Animals, is available here for whatever price you want to pay, which Iâ€™ve already done so that I can take my workout to anotha level of behind-the-times toolness. Join me and feel the burn!