Episode 306 Spoilers: Chuck vs. the Nacho Sampler; 2/1/2010
1/31/10: We'll learn more about Shaw's past.
From IESB [Update 2/1/10: Having seen the episode, this spoiler clearly referenced the wrong episode.]
1/24/10: Hannah is an ad executive that gets laid off and ends up taking a job at the Buy More where both Chuck and Morgan are interested in her romantically.
From Kristin [Thanks to NBC's episode description, we knew she was going to work at the Buy More. What we're really interested in is whether laid-off publishing exec is just a cover story.]
1/20/10: CHUCK MUST TURN AN ENEMY AGENT INTO A SPY FOR THE CIA. Chuck juggles his two lives as he trains new Nerd Herder Hannah (guest star Kristin Kreuk) and gets his very own asset who is caught up with The Ring. Chuck thinks he can handle his asset all on his own but Sarah and Casey feel the need to intercede. Meanwhile, Awesome must lie to Ellie when she starts to ask questions about Chuck. Morgan, Jeff and Lester do some recon work to learn more about Hannah.
From NBC
1/13/10: Guest character: MANOOSH DEPAK - Male. Late 20s. East Indian. Computer engineer, genius, nerdy. LARGE GUEST STAR ROLE.
From Casting Calls