Young Sheldon 100th EPISODE Thursday, March 31, 8/7c, CBS
Laughter has always been at the center of CBS’s Young Sheldon, the early-’90s-set prequel to The Big Bang Theory that explores the life of persnickety 12-year-old genius Sheldon Cooper (Iain Armitage) and his East Texas family. But heading into its 100th episode, TV’s No. 1 comedy has been pulling on the heartstrings as well. In the March 10 half hour, Sheldon’s livewire grandmother Connie, aka Meemaw (fan favorite Annie Potts), was blindsided when her cantankerous boyfriend, sporting goods store owner Dale Ballard (Parenthood’s Craig T. Nelson), dumped her. “It was a little tough to watch,” admits cocreator Steven Molaro, but the twist fits the sitcom’s mission for Season 5. “We’re not shying away from letting this show become the dramedy that…