It's because the "Video width may not exceed 540" limit. The embed for that video is set to "width=640" just change it to 540 and it will accept it.

I just put two CH vids in the queue and they work fine.

The thumbnails seem to be broken however. Firefox tries to find: "http://static1.videosift.com/videosift/i/hosts/collegehumor.gif"
but gets a 'file not found' message.

D'oh! I didn't catch that. *discard

Discarding this post - discard requested by original submitter MarineGunrock.