The last time I played Metallica, I think my "cruising" speed went up 3-4 mph, at least.

I've set up a smart playlist that only contains tracks I've never played (that is, after I ripped them onto my computer -- never played them all the way through on it or any of my iPods, either). It's over a thousand tracks, ranging from Norah Jones to Tommy Dorsey, Empire Brass to Fishbone.

I used to load my Shuffle with this playlist, which in turn introduced me to one of the hottest pieces I've got (IMO), Richard Strauss's Don Juan, served up by the wind-powered brass weaponry of Solti-era Chicago Symphony. I think that Farkas, Herseth, and Jacobs were on that crew. Holy cow...