Did Spassky stand up and applaude at Fischer after the famous Tartakower game? Is it true that Boris Spassky stood up and openly applauded at Fischer after the sensational round 6 win by Fischer in the 1972 World Championship match? (The QGD Tartakower), as portrayed in the 2014 "Pawn Sacrifice" movie?
Yes.


  The game itself was majestic, by far the best to date. Harry Golombek
  described it as "a masterpiece through and through." Fischer was able
  to create and then remorselessly exploit vulnerable spots in Spassky's
  barricade, prizing his defenses apart before battering him with the
  rooks and queen, and without once leaving his own position at risk.
  Spassky was virtually in zugzwang -- a term referring to an unusual
  position where a player would prefer not to have to move, since all
  possible moves will only make his position worse. Black's resignation
  position was quite pitiful, the king humiliatingly exposed to the
  world, like a naked man caught in the shower after the rest of his
  house has collapsed about him. The packed auditorium rose as one; a
  bemused, crushed Spassky joined in the applause, clapping for his
  opponent in recognition of the artistic creation to which he had
  fallen victim.


Edmonds and Eidinow, Bobby Fischer Goes to War (2003)