Justin Hartley, who has made a virtual career out of appearing in pilots of late (and, yes, Smallville) has been cast in drama pilot Austin Golden Hour, about a team of young ER surgeons and EMTs who struggle to pull through that critical one hour after a trauma. He's previously appeared in pilots for Aquaman (a.k.a. Mercy Reef) and Spellbound.
:D Thanks for the scoop Nuri!