An active participant in Jim Henson Productions (JHP), the company created by the muppet creator Jim Henson's work. I do not know much else about Brian, except that he has directed various episodes of Farscape, a television series put together by JHP.
I believe Brian to be Jim's brother, but I could be wrong as I do not remember where I read that piece of information.
Further research has produced the information that Brian Henson is the son of Jim Henson.