Watching a Goren and Eames episode of Law & Order: Criminal intent and/or a movie with Vincent D'Onofrio in it (he also stars as Goren for people that don't know), Doritoes with the sour cream and chive dip or a a meat feast pizza, Coca-cola or a cup of tea and video games, especially something like Persona 3: FES, Persona 4 or Deadly premonition (when I am over at a friends and he lets me play on his Xbox). Any combination of these things is almost guaranteed to cheer me up, at least a little bit.