I don't like Demo Reel. The shtick it had with the movie parodies was tired and could only hold my attention for so long. yes, the character stuff was interesting but the premise wasn't strong enough to work. In the Nostalgia Critic, the character stuff works because the comedy and the review work, but Parodies aren't strong enough to support it.
however if you don't mind slogging through the parody, the characters are worth watching. The trouble is I can't suffer through the parody to see it.