She might be his wife, but she's also a huge fan and his number one 'roadie'.Oscar-winning actress Nicole Kidman uploaded a fun and frenetic Instagram video on Tuesday morning showing her in closeup as she stood with her husband Keith Urban in the background as he rocked out on his guitar.The 52-year-old Australian-American movie star wore a thick lilac turtleneck sweater with her blond hair up and leaving tendrils around her face.