If the CowParade has been to your city, then it needs no explanation. If it hasn't, well, it's a traveling public art project consisting of 100 or so painted cows that has been hitting cities around the world. The cows are on their way to Lisbon, Portugal, and a great Brokeback-inspired ad has been produced to promote them. Check it out and watch the Ennis and Jack look-alikes smolder.
(thanks andré)