'Chuck' versus the series finale

Zachary Levi as Chuck, Joshua Gomez as Morgan, Yvonne Strahovski as Sarah in "Chuck." Credit: Warner Bros. Television Entertainment
Well, it's come to this, friends: The end of "Chuck," one of the really smart, genial, engaging, amusing shows of the past five years. "Chuckies" are in a state of mourning at this moment, and to assuage the sadness, NBC shot me some clips. They're on the jump, and my all-too-brief appreciation is here. . .