Exclusive Mike & Molly Sneak Peek: Kathy Bates Becomes BFFs with Molly

Kathy Bates is bringing joy — not misery — to Mike & Molly.

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The Oscar winner guest-stars on Monday's episode (9/8c, CBS) as Kay, the childhood BFF of Peggy (Rondi Reed) and godmother to Mike (Billy Gardell) — or "Meatball," as she calls him. Cheery, fun-loving and very affectionate, Kay is the exact opposite of curmudgeon Peggy, which means she and Molly (Melissa McCarthy) hit it off right away, much to Peggy's dismay.Check out an exclusive sneak peek of Bates' first scene below. Mike & Molly airs Mondays at 9/8c on CBS.(Full disclosure: TVGuide.com is owned by CBS.)