CBS | 9:01 pm

Now that Allison Janney has become a force to reckon with in films, thanks to her recent Oscar win for "I, Tonya," is Season 6 destined to be the last for this acclaimed Chuck Lorre sitcom? There’s some buzz to that effect, although no official announcement. The season premiere, "Pre-Washed Lettuce and a Mime," finds Christy (Anna Faris) daunted by her first day of law school, while mom Bonnie (Janney) is bothered by a bad dream.