En route to Savannah for his big-scale wedding, a phony New Yorker (Ben Affleck) encounters a ditsy life force (Sandra Bullock); they have several picaresque adventures together, and he reaches Savannah less phony. At least that’s the way this tiresome romantic comedy, directed by Bronwen Hughes from a Marc Lawrence script, is supposed to play; I found it pretty phony all the way through, and not even the presence of Blythe Danner as the fiancee’s mother helps much. With Maura Tierney, Steve Zahn, and Ronny Cox. 105 min. (JR)