Whats your favourite cable?

If your anything like me you have a plethora of cables, some in use, others that have not been used but despite what 'her indoors' says they are extremely important.
My favourite cable of all time (yes I do have a favourite cable of all time) fits into neither of these categories, its somewhat of a 'cable of all trades'
'What cable can this be?' I hear you ask, well... Its a five metre USB male to female cable, and what a stunner it is. I initially purchased said cable when occupying our student diggs to solve a wi-fi problem for my flat mate John, who was limited to a Wi-Fi USB dongle for his desktop, it was simply to far from the router to get a signal, so the best/cheapest way forward was to bring the dongle closer to the router apropo 5 metre USB cable.
It worked a charm but really came into its element when I got my hands back onto it, these days everythings USB but the trade unionist manufacturers keep pieing us off with shamefully short usb cables. For example Apple make stunning tech but always, ALWAYS give you the shortest amount of cable they possibly can, which is fine if you are sat at a static desktop iMac but with your iPod/iPhone/iBook you want to operate while charging in the comfort of your favourite chair. Sony are even worse; the PS3 promises wireless controllers, great, except when they run out of charge and your in the middle of killing someone so you have to plug it in and sit a foot away from the console, closer than yesteryear on PS2.
If you experience these problems, don't be coy and buy a 2 metre cable or even a 3, go the whole hogg and get 5 metres its practically as good as wireless.
Do you have a favourite cable? Please tell me, I do love a goodun.