I took me four years to finish mine - in fact of the three cat-5 I have driving my front three speakers, I've just this evening managed to finish one lead. I had had them braided and taped together, with the wires twisted together at the ends. A session a few weeks ago where I had to swap amps four times made me think about getting some plugs. Nice IXOS ones, and some sleeving and heatshrink from the nice people at vehicle-wiring-products.co.uk - and here is the result: I think it looks pretty swift. I'll finish the other two at the weekend.
edit: finished them off in 30 minutes this evening, plugged 'em all in, and fired up some Simple Minds in DTS neo 6 music. Great. Even though I can't see them, and know they sound no better, I'm pleased. If only the rest of the miles of crap behind the telly was as neat