* Jim Henson Productions, Hollywood, has announced...

* Jim Henson Productions, Hollywood, has announced the promotion of three top-level production executives.

Martin G. Baker has been promoted to senior vice president of production. Baker joined Henson Productions in 1979, and in recent years has worked as an associate producer, co-producer and/or producer of several TV series and specials.

Duncan Kenworthy has been named senior vice president of production. Based in London, Kenworthy will continue to produce as well as oversee feature and television projects.

Alex Rockwell has been appointed senior vice president of creative affairs. She will be responsible for the development of all U.S. television and feature film projects.