Following a string of recent big-name casting coups for the show (Jonathan Groff! Olivia Newton-John! Idina Menzel!), Molly Shannon, formerly of SNL and the short-lived Kath and Kim, will join the cast of Glee later this season. Shannon will play a “busty 45-year-old astronomy teacher and badminton coach” who is both an alcoholic and a pill-popper. And - try super hard not to hyperventilate, Gleeks - Shannon’s character will be a nemesis to the beloved track suit-fetishist Sue Sylvester, played by Jane Lynch.