One doesn't really appreciate the potential of Bruno Mars until you see him perform in a casual setting -- like Bardot in Hollywood on Friday night, with friends, family and the famous surrounding him in the intimate room. It's here where Mars, 25, shines. Though still young, he has been a music fanatic and performer for more than two decades -- he impersonated Elvis Presley at age 4 -- and it shows from his song selection and his easy interaction with his audience. Over the course of the final 15 minutes of performance, Mars, wearing his trademark fedora, ripped through Prince's "Kiss," Little Richard's "Long Tall Sally," slipped in the occasional Bob Marley quote, before landing at Otis Redding's "Sitting on the Dock of the Bay." (This reporter arrived late -- Cee Lo Green and Big Boi were performing at Club Nokia across town, and difficult decisions had to be made -- and therefore missed the Far East Movement's performance with Mars.)