So far in his remote-from-Portland segment “FredEx,†Fred Armisen has portrayed an American building designer who questions the existence of angels and a Peruvian Beatles cover band member who discusses global warming, and last night he returned with the weirdest character yet with the help of a wig, tacky hoodie, and pair of headphones. Naturally he turns it into an unorthodox surgeon who is in love with everyone he knows.