Banksy's Sundance debut Exit Through the Gift Shop was announced only hours ago, but the notorious graffiti artist has already made his mark on Park City -- and we don't simply mean he gave it a welcome jolt of hipster frisson. Sundance mainstay Joseph Gordon-Levitt just noticed that the elusive Banksy stencilled his design on a wall across from the New Frontier area, an impressively stealth achievement considering that the skies have just been dumping snow on us since last night. Anyway, the design: I think it's a metaphor for how the documentary filmmaker destroys that which he observes. Either that, or it's a teaser for a really rad Banksy party this week! Wahoo! [hitRECordJoe]