I noticed that both discs have a total of 19 clips each (not counting bonus clips). And it seems the longest clip is actually on disc 1 (Family Food, which lasts over 7 minutes).
It would have been cool if this set had a featurette on the parodies. Though I don't suppose they could show clips from the original source material (unless Warner Home Video has the rights to anything spoofed here).
I'd say that out of the content that has already been released on DVD, the Dragnet parody is the weakest, and of the content that hasn't been on DVD, The Braid-Y Bunch is the weakest. But there's a number of material I don't remember seeing (Family Food, Casablanca Alphabet, Dirtiest Jobs, etc.). I'm resisting seeking them out on YouTube or sesamestreet.org, instead waiting until tuesday to see them.
It's interesting that the Dragnet parody is just listed as "Dragnet", while the Casablanca parody is listed as "Casablanca Alphabet". Ever since I first saw the Dragnet sketch (on the All-Star Alphabet DVD, which doesn't list it's bonus clips with titles; Instead, the clips are clickable on images) I wondered what kind of title it would have (and now I'm thinking it could have been called "Dragnet W" or "Dragnet W/M"). I assume that the Casablanca parody doesn't have a title card.
Another interesting observation is that the DVD seems to specify which Here is Your Life and Beat the Time sketches are included, but the Colambo and Spaceship Surprise segments are just listed by those titles, not specifying which skits they are (and Spaceship Surprise should be listed as Spaceship Surprise: The Next Generation). But with Beat the Time it makes sense to specify which sketches are in the bonus features.