Forget Madonna's mediocre opening act. The showstopping moment at the 2006 Grammys was when the camera panned to Keith Urban's date: Nicole Kidman. After hiding their relationship for the last year, Nicole and Keith -- who are rumored to be engaged -- made their very first public appearance together. Check out the wonders from Down Under and 9 other glam Gram couples, including Britney Spears and Kevin Federline...

Then, indulge in our naughty 2006 Grammy Best & Worst slide show.