Most avid runners have their 'song': "Chariots of Fire", "Don't Stop Believing", "Freefalling". But is it the terribly clichéd lyrics or the beat itself that provides inspiration? The Yamaha BodiBeat is part MP3 player, part heart-rate monitor, and part metronome for your workout. The gadget serves as a personal trainer and DJ by selecting songs with the beats per minute necessary to keep you going. Armed with a setlist of Journey and Sublime, and in search of a nine-minute mile, we tested the device on the hills of San Francisco.

Forget the carbon-fiber bike that costs more than your house. How about one made of plastic? The Innervision bike is a design concept by industrial designer Matt Clark that ditches high-cost complex materials for pre-molded plastic parts.

Even the fishermen are going green. Any angler worth his bait has lost a few lines to the bottom of the fishing pond. And, chances are the line he lost is still lying there with those of his ancestors, damaging coral and killing fish. Traditional nylon lines can take up to 600 years to disappear, but with Bioline, a new "biofilament" line developed by alumni of the med-tech industry, that time can be cut to just five years. That's fishing technology even the fish will embrace.

Music can inspire much. It can evoke emotions and insert itself into our memories—but even Tom Petty ain’t getting me through 26.2 miles. Half that? Maybe. That's what the scientists behind yesterday's "Run to the Beat" half marathon were banking on by including 17 bands along the London course that were systematically chosen to distract runners from the misery of the moment.

British sports psychologist Dr. Costas Karageorghis helped pick the individual tempo, genre and location of each band to best benefit the runners.

Did you see the USC vs. Oregon State game last week? Tell me you didn’t miss it. No, I’m not talking about the shocking upset where unranked Oregon State somehow took down the number one team in the nation (though that was impressive as well. And did you know the nickname of Oregon State is the Beavers?). I’m talking about the first ever demonstration of HD instant replay.

New York Yankee Jason Giambi was a great power slugger while he was using steroids. After his admission, Giambi slumped for several years, before introducing a Burt-Reynolds-style, apparently all-powerful 'stache. But research presented at the American Physiological Society suggests Giambi, and others from the steroid era, could still be benefiting from their abuse years after their last dose.

What Facebook is to the original AOL Instant Messenger, Huddle is to football players analyzing game footage in the video room. Developed by a team of Nebraska Cornhuskers, and praised by the likes of Bill Gates, Huddle is a web-based scouting, coaching, and social tool for football teams.

Remember the original Tecmo Bowl? You could pick Walter Payton and be guaranteed that nobody else on the field would have a chance of catching him (except maybe Lawrence Taylor). It didn’t matter if Payton got hurt midseason, had a streak of fumbles or even retired the next year. In Tecmo Bowl, ‘Sweetness’ was forever. Ah, those were the days.

With the launch of DynamicDNA in NBA Live 09, EA Sports has completely shattered the static memory of Payton.

Can't let go of the Olympics? While it's unlikely you'll be able to purchase 2008 Chinese drummers to play at your next barbecue, apparently the big human-powered wheel from the closing ceremonies can be yours for the bargain price of $1690.

Just how often were McEnroe's tirades justified? A detailed analysis of two years of challenged calls in tennis using the Hawk-Eye replay system shows players got it right about 40 percent of the time. Published this summer in the Proceedings of the Royal Society B, the study suggests both players and linemen have an impressive accuracy of just over 1.5 inches. In 94 percent of the challenges, the ball was within three inches of the line.