(written from a Production point of view)
David Orange is the actor who portrayed the "sleepy Klingon" in Star Trek VI: The Undiscovered Country. He filmed his scenes with fellow Klingon actor Clay Hodges on Tuesday 9 April 1991 on Paramount Stage 15.
Orange is an accomplished theater and television actor, having twice co-starred on Broadway: in the Tony Award-winning Torch Song Trilogy, and also in Knockout. On screen, he began professionally acting in 1970 when he appeared in No Place to Hide. In 1985, Orange appeared in an ABC Weekend Special entitled "The Two-Minute Werewolf" (alongside Tucker Smallwood). He has guest-starred in over a dozen TV episodes and was also was featured in the 2000 production of The Pig Farm and over 250 television commercials.
Orange's science fiction suspense thriller novel entitled The Powder Merchant was published in December 2009, and he is currently writing another novel, a political thriller titled Vera Causa, and also a screenplay titled The Day They Came. 
Orange is also staff writer for the new international wine magazine, TASTED.