Hunky Cheyenne Jackson is set to appear in an upcoming episode of ABC's Ugly Betty where he will play a gay dad, reports Variety.

Jackson is the openly gay actor/singer last seen on Broadway playing the lead role of Sonny in the Tony-nominated musical Xanadu.

The guest spot marks the singing actor's third appearance in prime time. He recently appeared in NBC's Lipstick Jungle (Chapter Fifteen: The Sisterhood Of The Traveling Prada), which was followed by a yet to be broadcast episode of ABC's Life On Mars (Let All The Children Boogie). Jackson also can be seen in United 93, the feature film that details the involvement of United flight 93 in the 9/11 terrorist plot. He plays Mark Bingham, the gay man who is believed to have been among the passengers that stormed the cockpit of the plane.

Jackson is an ardent gay rights supporter. He advocates on behalf of the AIDS charities AMFAR and Broadway Cares/Equity Fights AIDS.

Gay monthly Out named Jackson 2008 Entertainer of the Year.

ABC has yet to announce the broadcast date of the Ugly Betty episode that guest stars Jackson.