Clearing up two facts:
Ahh...I see it all now! In the run up to Back In Action, Larry Doyle was hired to come up with a new series of Looney Tunes cartoons BEFORE that release, some of which were made, some of which were not, and some of which were made buy not released. The first was going to be a Tweety/Sylvester one called Museum Screaum, but was switched for The Whizzard Of Ow.
Apparently, and as the link above says, the ones that got finished were actually pretty funny, so they say. Unfortunately, WB doesn't know what to do with them - the plan was to issue them on the front of "family friendly" features such as Back In Action, Harry Potter, and The Polar Express, but so far...nothing.
Pretty cool that I nailed a description of the 'toon from a single pic though! Haha!
Mel Blanc does have a son, Noel, who can be seen working with Mel on the Roger Rabbit special, The Secrets Of ToonTown (sadly not on last year's Vista DVD). He can do Mel's characters perfectly, and it's strange why he is never really used as his replacement. However, this probably lies mostly in the fact that the Blanc family - headed by Noel - got into some legal tangling with WB over the use of his father's voice on mixed media releases (like Louis Prima's wife did with Disney on the video release of The Jungle Book). Though WB retained the right to use Mel wherever they liked (VHS, DVD, archive CD recordings, extras, etc), it put an end to Noel's vocal sessions.
Finally (:)), Brian Henson didn't really technically pick up the torch of Kermit. Yes, he took over the running - with his sisters - of the company, and he directed Christmas Carol, but only reluctantly because Frank Oz didn't want to spend too much time on it (other than turn up, perform as Piggy and Fozzie, and go home). On Treasure Island, much of the direction was left to David Lane (this from the horses mouth) while Brian was off, **apparantly** out of his head. As for Kermit, it's Muppeteer Steve Whitmire who's really be instrumental in keeping Kermit "centered" and as lovable as ever, since he stepped into the void left by Jim and bravely carried on (and a good job he does too, I think)!