Canon Powershot G12 & Pocketwizards
I don't have a PocketWizard but do have a G12 with which I've used the Yongnuo "RF-602" wireless trigger. I just got the "RF-603" wireless trigger and it works with the G1X, see http://lightdescription.blogspot.com/2012/09/yongnuo-rf-603.html .
I'm pretty sure that the older style PocketWizard works with the G series. I'm not so sure about the newer versions; in fact, I suspect that the new versions do not work with the G series cameras.