Nossa
It is like a blend of NY and Brazil. NYC based t-shirt design outfit Nossa prodeces sweet hard graphic clothing with an appropriate soundtrack. Retailed by a number of venues like Turntable Lab, Produkt and Karmaloop, Nossa even have their own online outlet.
Besides from making tees and plying Baile Funk, these guys also seem to though a mean party. Just check out the images in the gallery section of their site.