hmmm...I've got an "old fashioned" two-button, scroll wheel with a rubber ball mouse on my PC which is driving me up the wall. Problem is, I keep looking at alternatives (because I do have to spend some time on it sorting out videos but a) can't decide on the best one and b) can't bring myself to spend money on something that's going to get relatively little use
For people who are looking at mice and alternatives it would be worth trying ergonomic ones, definately go for optical or laser and I personally want 5 buttons which may just be because I'm so used to the extra functions my trackpad has

I primarily use my laptop and love my trackpad to bits. I remember (very many) years ago using a company Toshiba laptop which had a "nipple" mouse which at the time I loved because it took virtually no movement to use it and it did take me a while to get used to a trackpad but now I love it, that might even be an option for the PC.
more options :
keyboard with a built in trackball quite fancy this one myself actually, it has a lot of the shortcut buttons the laptop has and some useful extras,
presentation mouse - you can wander around with the mouse in your hand.
These are just a few "mainstream" alternatives, also much lighter on the pocket than some alternatives

Lindsey
...all the knowledge in the world is of no use to fools... ~ Long Road Out of Eden ~ Don Henley, Glenn Frey, Timothy B. Schmit (The Eagles)
Diagnosed with HMS 22 February 2006
Diagnosed with CFS/ME October 2005