Erinn Hayes was cast as a series regular on Guys with Kids, the new NBC sitcom about guys with kids. She will be replacing Sara Rue, who was originally cast in the part but is staring in ABC’s Malibu Country instead. The Childrens Hospital star will play Sheila, the ex-wife of one of the guys and the mother to one of the kids. She’s described as a real type-A attorney type. She might also be a ghost or a ventriloquist or she might not.