Question: Can you tell me anything about who Rachel Bilson is playing on Chuck aside from the fact that she's a love interest for Zachary Levi?

Answer: I'd ask Josh Schwartz, but TV Guide's Damian Holbrook ("The Joy of Sets") already beat me to it! "She plays Lou, a sandwich maker who complicates the faux relationship with Chuck and Sarah by possibly being available for a real relationship," says Schwartz. "But like all characters in Chuck's life these days... she may not be what she appears."