Almost Chrissy
Loni Anderson was almost Chrissy but producers decided to keep looking because they wanted someone who was a perfect fit. Good choice.
And Suzanne Leaves
Despite being an integral part of the show Somers was released well before the rest of the cast. Somers created tension on set when she demanded a $120,000 raise per episode — the same pay as Ritter. She also requested a slice of the profits from the show. The writers quickly wrote her out and let her go after her contract expired.