Rumer Willis, Jayson Blair, Rachel MacFarlane and Alex Borstein step out for the Best of Santa Barbara in Los Angeles! event; Jennifer Grey, Nathan Fillion, and Alyson Hannigan attend a Much Ado About Nothing screening; Robert Redford, Kerry Washington, Octavia Spencer, and Moby help honor Roger Ebert at the Third Annual Celebrate Sundance Institute Benefit hosted by Tiffany & Co.—get caught up on L.A.'s top Hump Day happenings in this edition of Last Night’s Parties.