Cheyenne Jackson has become a late addition to Ryan Murphy‘s HBO pilot Open, from Fox 21. Jackson will be a series regular playing a new character I hear Murphy has created for him. Open, which Murphy co-wrote with Lauren Gussis, is described as a modern, provocative exploration of human sexuality and relationships. It centers on five central characters played by Michelle Monaghan, Scott Speedman, Wes Bentley, Anna Torv and Jennifer Jason Leigh. I hear Jackson plays a handsome meth addict. Filming is expected to begin in February. Jackson previously worked with Murphy on Glee where he did an arc. The actor, repped by ICM Partners and the Schiff Co., guest stars on the Lifetime pilot HR.

Jason O’Mara (Vegas, Terra Nova) has been cast as the lead in Matt Nix’s USA Network pilot Complications, a gritty medical drama centered around John Ellis (O’Mara), a disillusioned suburban ER doctor who finds his existence transformed when he intervenes in a drive-by shooting, saving a young boy’s life and killing one of his attackers. Fox TV Studios is producing.