So after I moved to Canada, I managed to meet a couple of local gamers plus a couple of others who hadn't gamed before but were interested in playing anyway.
At the same time, I'm still running my home Pathfinder campaign in the USA over Skype.
For this home campaign, I had already gotten the 3.5 version of White Plume Mountain prepared to run in Pathfinder, so I decided to use it as the dungeon for the one-shot with the locals as well.
Here is where things get really interesting. I have made the two groups aware of each other, and mentioned that if one group does something unexpected, hilarious, or otherwise memorable, the other will come across evidence of their zany scheme when they arrive.
I don't know how the Americans are going to respond to this, but the Canadians were really excited upon hearing of their competitors and have asked about a PvP fight with the Americans over Skype.