Britney Spears steps out in L.A. Plus, Tom Cruise, Jessica Simpson, Lindsay Lohan and more


Karaoke? Not quite: Star Trek actors (and Priceline pitchmen) Leonard Nimoy and William Shatner get a few laughs in while addressing fans Sunday at a Hollywood tribute to costar James Doohan (who played Scotty). Two days later, Doohan, who was recently diagnosed with Alzheimer's disease, received his star on the Hollywood Walk of Fame.