What actors and actresses appeared in The Karen Dunbar Show - 2003?

It seems you're asking about a show that doesn't quite exist under that name. There was a Scottish sketch comedy show called "The Karen Dunbar Show" that aired from 2001 to 2003, but it doesn't seem to have a specific 2003 season.

It's possible you're remembering a specific episode or special from the show, or perhaps there was a different show with a similar name. If you can recall any other details, I might be able to help you further.