Adam Levine, Usher and Shakira hit NBC's "The Voice" red carpet event; Ziggy Marley performs a very intimate show at Sonos Studio; Karen Gillan, James Lafferty, and other costars step out for a special screening of Oculus; HBO celebrates the premiere of its new comedy series, "Silicon Valley" at Paramount Studios—catch up on Thursday's top L.A. events in this edition of Last Night's Parties.