Ally Sheedy (b. 1962) plays the character Mr. Yang on the series Psych.
Sheedy is an American actress who has also appeared in episodes of Hill Street Blues and Kyle XY. She also appeared in movies, such as Bad Boys (1983), WarGames, Oxford Blues, The Breakfast Club, St. Elmo's Fire, Twice in a Lifetime, Short Circuit, Maid to Order, Heart of Dixie, Betsy's Wedding, Fear, Only the Lonely, Man's Best Friend, Macon County Jail, High Art, The Autumn Heart, I'll Take You There, Just a Dream, Happy Here and Now, Shooting Livien, Day Zero, Steam, and Harold. She'll also be appearing in the future movie Ten Stories Tall.