Which long-running PBS series appraises antiques brought in by the public?

Which 'SNL' cast members played the Blues Brothers? Which comedian starred as a fictionalized version of himself in 'Louie'? What channel is known for running 'Shark Week' each summer? Which network airs the long-running series 'Pawn Stars'? Which Discovery series follows crab fishermen in the Bering Sea? Which Discovery series tested myths with Adam Savage and Jamie Hyneman? Who hosted 'Dirty Jobs'? Which Netflix docuseries followed Joe Exotic and big-cat owners?