Stephen Stills, Dave Matthews, Chad Smith, and other musicians honor Neil Young at the Producers & Engineers Wing Grammy Week event; Paris Hilton, Allison Janney, Ray Liotta, and more attend opening night of Cirque Du Soleil's Totem; Carla Gugino, Timothy Olyphant and the rest of the "Justified" cast participate in a tribute to writer Elmore Leonard—see who was out and about on Tuesday in this edition of Last Night's Parties.