Executive Producer Brad Pitt steps out for a special screening of his new film, Big Men; Beth Behrs, John Stamos, Lizzy Caplan, Kaley Cuoco, and more support the Alzheimer's Association at the 22nd "A Night At Sardi's" benefit; Joel McHale, Gillian Jacobs, and fellow castmates hit the "Community" panel at PaleyFest—get a look at all this L.A. action and more in today's edition of Last Night's Parties.