James Ralph Tafoya, Sr. (born 17 July 1979) is the ex-husband of Holly and the father of James, Tyler & Ryan.

Jimmy's form of discipline was yelling, hitting and cursing at his sons. During Observation, he yelled at Ryan for not eating dinner properly and threw a plastic fork at him. He also swore at him. When Jo confronted him about this behavior, Jimmy said it was OK because it was only a plastic fork. Jo told him that he can't do that.

He also admitted that his own childhood wasn't very loving and that he wanted to give his 3 sons a better upbringing than he had. He was also mean to Jo, just like his ex-wife.

He was 28 years old when he appeared on Supernanny. He is now 38 in 2017.

Sometime after Supernanny, on Wednesday, August 29th, 2012, he and Holly divorced and he unfortunately lost custody of his 3 boys.