The low-rated shows "30 Rock" and "Mad Men" shared the spotlight at the Emmy Awards for a second year on Sunday, but most of their stars were snubbed as the acting awards went to repeat winners or surprise choices. Tina Fey, the creator and star of NBC's "30 Rock," failed to defend her best comic actress title. She lost to Australia's Toni Collette, who plays a woman with multiple personalities in Showtime's "United States of Tara." Fey's co-star, Alec Baldwin, was the only one of 13 nominees from either "30 Rock" or "Mad Men" to win an acting prize, in his case for playing a bumbling network TV boss. Still, "30 Rock" was named best comedy for a third year, and "Mad Men" best drama for a second. Both prizes were announced at the end of the three-hour ceremony. "Phew! That was a nail-biter," said Fey, accepting the big prize for "30 Rock," which won just five of the leadin...