'Party Down' star joins Sarah Michelle Gellar pilot
The pilot is set in New York and focuses on three dysfunctional siblings -- played by Gellar, Molly Parker and Nate Corddry.
According to The Hollywood Reporter, Orth will play the playwright husband of Parker's character. Scott will play the ex-husband of Gellar's character.
Scott, currently starring in the Starz comedy "Party Down," previously was a regular on HBO's "Tell Me You Love Me."
Orth has appeared on recent episodes of "30 Rock," "Fringe" and "Canterbury's Law."
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