Joel McHale and his "Community" costars do a PaleyFest Q&A panel at the Saban Theatre; LMFAO's Redfoo and Jeremy Piven double team at the Desert Smash Charity Event in Palm Springs; Barbra Streisand, Sarah Silverman and Jason Mraz help honor Al Gore at "An Evening of Environmental Excellence"; Halle Berry and Abigail Breslin premiere their emergency call center movie,The Call—find out where the stars conversed, partied, and played (tennis) on Tuesday in this edition of Last Night's Parties.