Melissa Etheridge and Tammy Lynn Michaels gave their new twin babies some rock 'n' roll names: their daughter is Johnnie Rose and their son is Miller Steven.The little ones entered the world on October 17 and Tammy and the babies are in "excellent health," according to Melissa's Web site."The creation of life brings about immeasurable love, and pours hope into the future," they said in a statement. "The joy will help carry us through our upcoming sleepless nights. Keep up with the Hollywood baby boom in iVillage's Celebrity Baby Tracker. Next stars headed to the delivery room? Heidi Klum and Tobey Maguires fiancee, Jen Meyer.