S1: Chuck Versus The Intersect
S2: Chuck Versus The Colonel
S3: Chuck Versus The Other Guy
S4: Chuck Versus The Leftovers
S5: Chuck Versus The Santa Suit
I've got no future I can plan on past tomorrow
S1: Three-way tie - Chuck s The Interesect (sets stage for series); Check vs. the Alma Mater (explains a lot about the Intersect); and Chuck vs the Hard Salami (Chuck and Sarah heat up)
S2: Loved this entire season, but Chuck vs. the Ring
S3: Tie Chuck vs. The Other Guy and Chuck vs. The Ring II
S4: Three-way Tie: Chuck vs. The Push Mix; Chuck vs. the Cat Squad; and Chuck vs. the Clifffhanger
S5: Chuck vs. The Baby