'Chuck': Linda Hamilton stars in Season 4 promo

linda-hamilton-chuck-video.jpgThe first on-air promo for Season 4 of "Chuck" has hit the web, and there is much good contained in its 20 or so seconds.

Thrill! To Chuck ( Zachary Levi) freeing Casey ( Adam Baldwin) and Sarah ( Yvonne Strahovski) from a sticky situation! See! Chuck disguised as an old man! (OK, that's from last season's finale, but it's still a great visual.) Lament! The lack of Morgan ( Joshua Gomez) and Capt. Awesome ( Ryan McPartlin) in the spot!

And, of course, there's the money shot toward the end of the teaser: a glimpse of Linda Hamilton as Chuck's mom, aka the reason Chuck has for getting back in the spy game following the end of last season. It's tough to ignore a dying request from your father, after all.

Does the promo tell us anything we don't already know about the new season? No -- unless confirming that Linda Hamilton still looks like herself counts. But until Sept. 20 comes around, we'll take whatever "Chuck" we can get. Here's the teaser:

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Photo credit: NBC