We Got Married
He joined the cast of "We Got Married" on October 3, 2009, coupled with Brown Eyed Girls member Ga-In. Although he was initially only supposed to be featured in the Chuseok special, his appearance brought in the highest ratings yet for Season 2, so he was announced as a permanent couple. Jo was diagnosed with H1N1 on October 28, 2009, causing them to postpone filming "We Got Married". He recovered quickly after treatment.