Which part of Portland are you going to be at? There's lots of places to go depending on what area you're going to be in. Henry's, Full Sail Downtown, The Horse Brass, Belmont Station, Lucky Labrador NW and Deschutes are all good ones. McMenamin's is a Portland staple and there's many all over the place, although some liken it to the Starbucks of the brewpub world. Rogue, Bridgeport, Hopworks, Laurelwood, Almeda, Lompac are on the west side. I just went to the Green Dragon near downtown, I'm a fan.
There is a very fine line between "hobby" and "mental illness."