[Calderyon]

Not really a game move, but Topaz voting for Jillian (her rival) to win instead of Gary (her friend and closest ally).

Peter not using the veto to save Topaz and force a replacement nominee.
Brittnee nominating Willow, instead of one of the other side. And then Sarah not voting to save Willow, when she had the chance.
Godfrey taking Sarah to the final two.
Sindy and the girls forming a girls alliance without checking the room first for eavesdroppers.