CBS announces a dud Colbert replacement. ALSO: Shrinking jumps the couch

CBS has announced the replacement show for The Late Show with Stephen Colbert. And it is possibly the lamest, least-compelling choice CBS could be making.

Colbert’s The Late show will sign off on Thursday May 21. Then, from May 22 every weeknight at 11:35pm CBS will screen Comics Unleashed with Byron Allen. This is a cheapy panel chat show that has been…