"I've made a huge mistake."

4: Key Decisions

G.O.B. locks himself in jail; commits to Marta.

12: Marta Complex

G.O.B. breaks up with Marta.

G.O.B. gets back together with Marta.

Michael finally realizes that "hermano" means "brother" in Spanish.

22: Let 'Em Eat Cake

G.O.B. becomes CEO.

1: The One Where Michael Leaves

G.O.B. can't remember ever saying "I've made a huge mistake."

George Sr. escapes with the evidence.

2: The One Where They Build a House

George Sr. has an affair with Kitty.

14: The Immaculate Election

G.O.B. messes up George Michael's campaign video.

1: The Cabin Show

G.O.B.'s hugest tiny mistake was having Steve Holt.

3: Forget-Me-Now

Steve Holt thinks he slept with Maeby.

G.O.B. fathered Steve Holt.

6: The Ocean Walker

Michael realizes Rita is special.

10: Fakin' It

13: Development Arrested

Lucille put Michael in charge.

1: Flight of the Phoenix

The Altitude Magazine story on Michael is subtitled: "Michael Bluth is Praying You'll Fix His Huge Mistake."

Related Joke: Prayer hands

12: Senoritis

The narrator thinks that Maeby made a huge mistake, but she says "Nah, I'm fine."