Y'know, just fucking boss tunes, tunes that you instinctively turn up to 11.
Just had my iPOD on shuffle walking down the shops, and I got that immersed in "Life on Mars" i walked right past the fucking shop, and only realised about 150 yards further down the road.
Other tune that can do that to me, "There she goes" by The La's, can get totally lost in that.
Anyone else get this, or am i just fucking weird