The first three seasons boasted a slew of appearances from Hollywood favorites, like Henry Winkler, Scott Baio, Liza Minnelli and Judy Greer. Thankfully, they're all returning. And with them are Isla Fisher, Terry Crews and John Slattery. Yes, the John Slattery (above, right) who plays Roger on "Mad Men." Roger's one-liners paired with "Arrested Development" creator Mitch Hurwitz's subtle wit? Be still, our hearts.
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