BABIES MAKIN' BABIES Cera, PageIn case you haven't heard, you're going to fall for Juno (Dec. 5) like a lovelorn Alzheimer's patient on a Carnival cruise. The movie hasn't even opened, and it's already been anointed this year's Little Miss Sunshine, with Oscar buzz to boot. (If you don't enjoy it, be prepared to feel pretty isolated in the months to come.) Director Jason Reitman has assembled a dreamy ensemble cast, with the diminutive Ellen Page squeezing perfectly into the sardonic, overly articulate title character who becomes preggy at the nut of a predictably great Michael Cera and decides she'll give the child up for adoption. Mrs. Ben Affleck (Jennifer Garner), the adoptive mother, reminds you that she can indeed act, giving a finely tuned performance as one high-strung yuppie chick, and Jason Bateman, her deadpan love interest, is lovable in a role that decidedly isn't.