Hailing from western Massachusetts means frequent visits to MASS MoCA, the erstwhile mill turned modern art museum. I am never disappointed. The current show, "Oh Canada" featuring artists from, uh, Canada, was no exception. Environmental themes, surprising media combos and subversive humor blended in this stellar show. My hands-down favorite piece was Kristan Horton's mesmerizing Haptic Sessions ed #1/3, (above) a stop motion video made on a flat bed scanner. The terrible mix of oil and wildlife is clear in Iiniiwahkiimah, (below) by Terrance Houle. A black vinyl buffalo drips above oil flasks, the type used for filling up car engines, and frequently tossed in parking lots. The title references Houle's Blackfoot name, translated to mean buffalo herder.