When Denise Richardsappeared on Oprah in January, she said that ex-husband Charlie Sheen called on Christmas to wish their daughters, Lola, 5, and Sam, 4, a happy holiday. The bad news? He was calling from jail. The children didn’t catch on, and were later informed of their father’s incarceration (he was arrested on domestic violence charges against his current wife Brooke Mueller) by classmates. Talk about something you don't want to hear from a kindergartener! Richards, 39, divorced Sheen, 44, when she was still pregnant with Lola, saying he had been abusing alcohol and drugs and threatening her with violence. Sheen had now-15-month-old twins Bob and Max with Mueller last March -- and in February, both parents entered rehab. Hopefully, the Two and a Half Men star has realized that his fathering skills need some rehab, too.