Nothing's funnier than an unplanned pregnancy, and writer/director Judd Apatow (40 Year Old Virgin
) understands that, making good use of misapplied condoms, gynecologists' offices, and close-ups of vaginas in his new comedy Knocked Up
. Seth Rogen stars as the chubby loser who winds up with the incredibly beautiful woman (Katherine Heigl). His cast of stoner friends then get high while he tries to think of funny things to say about Braxton-Higgs contractions. Thanks to some strong comic timing by Rogen and Paul Rudd, and good scripting by Apatow, this very tired plot manages to be reasonably entertaining and intermittently hilarious, if nonetheless painfully predictable and a little too cautious in its plotting.