Has its moments. <em>'Knocked Up'</em> begins with more cringe than enjoyment, but belatedly turns into something worth watching. The story is comical and silly for the most part, but gets serious here and there and ends up holding a positive message. The cast list is absolutely stacked, there are many familiar names. Seth Rogen, Katherine Heigl, Paul Rudd, Leslie Mann, Jason Segel, Kristen ...