It's been 16 years since a The Big Bang Theory actor last appeared, returning in Young Sheldon season 7, episode 10. With only five episodes remaining, the show seems to be wrapping up loose ends, but surprises keep coming. Meemaw faces the aftermath of an illegal gambling room shutdown, leading to new plots. The upcoming episode, "Community Service and the Key to a Happy Marriage," features Octavia Spencer as Meemaw's probation officer. Spencer previously appeared in The Big Bang Theory, but her new role doesn't seem to connect. Young Sheldon airs Thursdays on CBS.