Kelsey Grammer has officially become a dad - again - at the age of 70. The Frasier star announced he and his wife, Kayte Walsh, 46, recently welcomed a baby boy named Christopher during an appearance Monday on the Pod Meets World podcast.This is the 70-year-old actor's eighth child, and his fourth with Walsh.Grammer told Boy Meets World actors Danielle Fishel, Will Friedle and Rider Strong that he and his wife "just had our fourth one, so it just became eight kids.""It was, like, three days ago," the Cheers actor added. "Christopher that's just joined the family.