Who shows hand first
 

who shows their hand frist at a showdown?

The original bettor, then the callers in order around the table.

The original bettor, unless of course, the bettor was raised... in which case the raiser should now show first.

2 cents

Yep, good update to my answer, thanks.

On a related note
 

I don't care what the situation is -- slow rolling is evil.

lol outta nowhere.... i agree tho, slowrolling is as tasteless as you can get at the poker table

The original bettor will showdown first, then proceed clockwise around the table. I have also seen it where there is no action on the river and showdown will start with the SB and continue clockwise.

If I have the nuts in a live game I will do the person a favor sometimes and just show first, and let him muck. Sometimes I feel bad about taking a bunch of cash from him (especially if it is a good friend) and don't want to know that I gave him a bad beat or that he doesn't know how to play :D.

original bettor/raiser shows, if there was no action on the river then 1st position shows first, goes in order of position.

-jB