John Krasinski by Brian Ach/WireImage.com
's John Krasinski and
Saturday Night Live
missing person Maya Rudolph are having a baby... in an as-yet-untitled big-screen comedy. According to Variety
, the Sam Mendes film follows an expectant couple as they traverse the country in search of a place to lay down their family roots. Krasinski and Rudolph previously worked together on the voice cast for Shrek the Third
. Shooting starts in April, and Cheryl Hines is onboard to costar.