Here's a little script that swaps the positions of two controllers to make setting up walkcycles quicker. Thanks to Per Anders over on CGTalk for helping me with the nuts'n'bolts of this code.
Of course you could just do this by manually copying and pasting the values but where's the fun in that?!
You can see a short demo of the script in use here.
Download the script here.
Hope you find it useful,