Katherine Von Till

The Coopers discuss the possibilities of black holes and alternate universes when Dr. Sturgis (WALLACE SHAWN) comes over for dinner.

Sheldon’s germophobia lands him in detention when flu season hits Medford and he takes extreme measures to remain healthy.

Sheldon's database invention puts him at odds with the university; the church takes issue with Meemaw's video store.

Mary clashes with Sheldon’s drama teacher Mr. Lundy (returning guest star JASON ALEXANDER) over plans for a Halloween haunted house fundraiser for the church. Also Georgie falls for a rebellious teenage girl that Sheldon is tutoring.

After graduating high school, Sheldon has a breakdown when he realizes he may not be ready for college. Also, Dale (recurring guest star CRAIG T. NELSON) tries to make amends with Meemaw in the season four premiere episode.

Things spiral out of control when Sheldon boycotts his favorite bread company and ends up on the local news. Meanwhile Georgie offers Veronica a shoulder to cry on when she’s dumped by her boyfriend.