First Alyson Hannigan announces that she's pregnant, and now Cobie Smulders is too! Lily having a baby can be explained on the show easily given that she and Marshall have openly discussed it, but Robin? I wonder if they'll go the hide-her-behind-a-pillow/counter/tabletop route since Robin's been really vocal about not wanting kids.
Please, please, please don't let them have Barney knock her up. It'll change EVERYTHING and not in a good way.