Imagine the shrieking, howling, and all-around fandemonium that occurs when Hannah Montana star Miley Ray Cyrus walks down the street. It turns out she's not above that sort of behavior herself when it comes to her own celebrity crush. Asked by Bus Radio which star would make her faint if he walked in the room, the answer was obvious: hunky singer John Mayer. Says Miley, "John Mayer came to my show...and I was running around like a crazy person! I was excited." But Billy Ray's superstar daughter doesn't have much time to faint on the job these days. She's hard at work on her new album, due out this summer, and preparing for Hannah Montana, the movie, which starts filming soon.