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Reg E. Cathey, 'Law & Order: SVU'
Where you've seen him before: Cathey played Carcetti's (Aiden Gillen) political adviser, Norman Wilson, on "The Wire," Barry K. Word on "Lights Out" and Martin Querms on "Oz."
Oct. 2, 2012
Where you saw him again: As Bart Ganzel's (Peter Jacobson, also pictured here and a quintessential That Guy before his long run on "House") lawyer on the "SVU" Season 14 premiere. Fun fact: The "SVU" writers also named his character Querms as a nod to his "Oz" role.