The orange blimp promoting Conan O’Brien’s new late-night show on TBS hovered over Conan’s former stomping grounds at NBC Universal this afternoon. Here is a photo capturing the blimp as it flies above Burbank and Universal. Sources say the blimp was visible from the NBCU offices as well as the Burbank set where The Tonight Show with Jay Leno is taping. Conan goes against Leno and the rest of his late-night rivals tonight when he will kick in his second week on TBS.