The Graham Norton Show Saturday, 10 p.m., BBC America
For those yet to have their fill of “Anchorman 2: The Legend Continues”-related promotion, Norton sits down with the cast — Will Ferrell, Steve Carell, Christina Applegate, Paul Rudd, and David Koechner — for a talk and a few laughs. He also chats with sisters Joan and Jackie Collins. Also on tap is a historic gathering of the surviving members of the Monty Python comedy team. Canadian crooner Michael Bublé is on hand to serenade everyone.
Treehouse Masters Friday, 9 p.m., Animal Planet
For folks who have always had a vision of their dream house-- treehouse that is-- this series, which follows the inventive work of a group of artists who build homes among the branches, is a fun diversion. Full story for BostonGlobe.com subscribers.