Crystal in general.

Without her, the season would be kinda boring. Sure, Sugar would be entertaining but half the entertainment comes from her being retarded to sway from this alliance to another every week.

Sugar: ohmygod Kenny told me Ace wants me out. *votes Ace off*
Sugar: ohmygod why did I take Ace out? Kenny lied to me and Matty was telling me the truth! *realigns with Matty*
Sugar: i'm back with kenny again cause Matty sucks at strategizing
Sugar: I'm back with Matty again because Kenny is too sneaky and Matty's a good guy

Other than that, a chunk of her entertainment came from luls @ exile and the Randy boot.