Who hosted 'Dirty Jobs'?

Which network airs the long-running series 'Pawn Stars'? Which long-running PBS series appraises antiques brought in by the public? Which Discovery series follows crab fishermen in the Bering Sea? Which Discovery series tested myths with Adam Savage and Jamie Hyneman? Which Netflix docuseries followed Joe Exotic and big-cat owners? Which 2020 docuseries followed Michael Jordan and the 1990s Chicago Bulls? Which HBO series follows an NFL team through training camp each summer? In what year did 'I Love Lucy' premiere?