Hi there,
Wow where to start, there is so much to say about what all is going on with the Muppeters. First off I want to tell you some sad news first. Richard Hunt (Scooter Forgetful Jones) had passed away in 1991-1992 (someone will correct me on that)
with complication with AIDS. there are several links I could give you, but I'm going to give you the Richard Hunt tribut done on the MuppetCast.
The MuppetCast is a free Podcast that anyone can hear. You don't even need an Ipod. Here is the link for the Richard Hunt tribuet and the Jim Henson one done a few weeks ago with Frank OZ.
The Jim Henson Tribute:
http://muppetcast.com/WordPress/page/4
Richard Hunt Tribute:
http://muppetcast.com/WordPress/page/21
Ok so that covers Richard now for the other core Muppet Show Muppeters, We will srart with Frank Oz.
After co directing the Dark Cristal and Directing Muppets take Manhaten Frank found a new love, derecting movies. He has been backing away from the Muppets ever since about the late 1980's to do his own Movies. From about 1994 (Somoeone correct me again) a young man by the name of Eric Jackabson has been working on Sesame Street doing Frank's Muppets when he can not be there. Then Frank would dube over them. Then in the late 1990's the show was wanting more the the classic Muppets back on the show, Frank could not give Sesame all the time they needed him so he gave Eric his blessing to prefrom some of his Muppets. (Bert, Grover) In 2000 the Jim Henson Company had Muppetfest. Frank was busy once again, and they had Eric Prefrom Piggy via- Sattleate. It was so convincing that a lot of people thought it was really Frank. In 2003 Frank made his last apperence with the Muppets on the Today Show. Now Eric Jackabson prefroms (Fozzie Piggiy Animal and Sam)
In 2005 Jerry Nelson retired doing the Classic Muppet show Muppets full time. Jerry was at the time haveing health issus and just could not give the Muppets the time they needed. (Get better Soon Jerry)
Dave Golze and Steve Whitmere have really steped up the last few years, and taken on more responablity with the Muppets. Even helping some of the Muppets stay alive such as (Kermit Ernire Stalar and Waldorf)
There is a sort of new guy still getting his feet wet and loving it. He is Bill Beratea, and has been with the Muppets since 1996. Bill has help bring life to some new Muppets such as Pepe the King Prawn, and Bobo the Bear. He has also steped in and voiced Rowlf the dog and DR. Theeth.
This is just a little bit of a list for you we have a full who does what on this site, and here is the link.
http://www.muppetcentral.com/help/faq/muppets.shtml#7
I hope this helps and welcome abord the fun wagon!