I have customer involved in consumer electronics. They have multiple buildings/labs. EVERY one of their labs has a full rack of audio/video gear, some old, some new. The engineers just crank up the tunes to listen while they work. Today I went to what had to be the best set up so far.

17" iMac running Front Row. Connected to older Onkyo receiver w/ 6' Martin Logan planars and dual 7' cylinder subs. Wow, better than a lot of home systems.