Okay, I get that the inevitable "my best bud is a married guy now, I've lost him forever" story had to come around, but the way they did it in this episode was just lame. Sure, the idea of going to an old college haunt about to be destroyed was a good jumping off point... but the entire storyline was weak.
As for the Robin and Barney part--personally I loved it. Being a Canadian girl myself--I own four Vancouver Canucks jerseys, thank you very much--a lot of the jokes were things my cousins and friends that live in the States have riffed on a thousand times, especially about the money--but I've never confused a five dollar bill for a fifty here; I went to San Fran a few years ago and did that a dozen times because all the money is the same exact colour.
Still, the Robin and Barney storyline in this episode had me cracking up the whole way through. I did Philosophy homework during the other half of the episode.