Screencaps:
01x01 - Pilot
01x02 - Chuck vs. the Helicopter
01x03 - Chuck vs. the Tango
01x04 - Chuck vs. the Wookie
01x05 - Chuck vs. the Sizzling Shrimp
01x06 - Chuck vs. the Sandworm
01x07 - Chuck vs. the Alma Mater
01x08 - Chuck vs. the Truth
01x09 - Chuck vs. the Imported Hard Salami
01x10 - Chuck vs. the Nemesis
01x11 - Chuck vs. the Crown Vic
01x12 - Chuck vs. the Undercover Lover
01x13 - Chuck vs. the Marlin
Bonus - Opening Sequence