Gluttonous sports guys Mike Felger (left) and Gary Tanguay celebrated the 5,000th episode of Comcast Sportsnet’s nightly TV show “Sports Tonight” with a party Monday at the network’s Burlington studios. Tanguay, a native of Rumford, Maine, has been on the show from the beginning, originally cohosting with Wendi Nix, the ex-wife of Sox GM Ben Cherington who now works for ESPN.