Thanks a lot to the people who have replied! I've since found someone who is sending me some Silversmith. That person wanted Mikkeller, and I still have one bottle each of Pliny and Heady Topper that I would be willing to part with (and it easy for me to get more Mikkeller). There is another Canadian beer I would love to get my hands on: Deception Bay IPA, by Tatamagouche Brewing in Nova Scotia. If anybody has access to that and would like to trade, please let me know.