I'm sure by now everyone has heard the theory about the "Red Shirt Guy" who is sitting in the food court during the final episode of season 3.  If you're not familiar with this theory click this first link. It's a short video.

http://youtu.be/590v4FCm6WU
http://www.youtube.com/watch?v=590v4FCm6WU&feature=player_detailpage

    Now, what many of you may not know, is that this same man can be spotted in season 4 episode 9.
Around 35 secs into this video he is sitting on the roof top wearing a suit, while Jane and Lisbon enjoy their icecream.  This is obviously the same man. Short, dark hair. Medium build. Wearing a business suit......Oh did I mention the name of the episode is "THE RED SHIRT".  
           I would like to hear you all expand on this theory and share thoughts. And is that the CBI rooftop we see so much?  Anyway watch the clips and take a look.  Open two windows and take a look at the guy....

http://www.youtube.com/watch?v=hAs5hLQftwI&feature=share&list=PL3A4A9B97CBA34A29