I'll play...
I have four systems;
Home hifi
Sony CDP-XA5ES fixed laser cd player with DIY Burson op-amp upgrades
Bewitch KT88 integrated valve amp with Electro Harmonix, Golden Dragon and Tesla tubes rolled
Aurum Cantus Leisure II speakers with custom hard wired passive cross overs and custom ribbon tweeter diaphrams , and all screw mounted to 40kg welded steel stands
Kimber Kable rca's and speaker cables
This system gives me goosebumps.
Home theatre
Dell 580 PC for dvd and Apple lossless playback connected to amp and tv via HDMI
Sony Bravia LCD tv
Denon's cheapest 5.1 channel receiver - yes, I really want to change this to a Sony ES or a Marantz
Canton satelite/sub speaker system - the one with the alloy enclosures and two way satelites
Impressively good, especially since it cost relatively little < $3000
The car
Clarion HX-D2 24bit cd pre-amp head unit
Phoenix Gold Titanium amps (x2) for active front stage
Alpine PDX4.150 amp for rear fill and sub
Audible Physics XR3M magnesium 3" super wide band drivers (20kHz down to 250Hz) in the A pillars
Seas Prestige 6" alloy drivers in sound deadened doors
Infinity Perfect 10VQ magnesium cone sub
Monster XLN Pro cables
A whole lotta custom work so far and some serious tuning to get it sounding just right once it's completed.
Personal
iPhone 4 playing back low compression files through VSonic canal phones - set to flat!
I think that just about does it.
Yes, music has been a BIG part of my life since I can remember.