The Plaza Turns 100The Plaza Hotel turns 100 on October 1, and she’s having a birthday party. MTV nixed having the stars of The Hills go to the Gossip Girl premiere party at Tenjune. On NY1’s Wiseguys, Ed Koch and Al D’Amato berated lefty Mark Green over MoveOn.org’s “General Betray Us” ad. Alina Shriver, sister-in-law of Maria and wife of Anthony Kennedy, just debuted a clothing line. A Pontiac had to be removed from the stage of 50 Cent’s concert at Hammerstein Ballroom because it had gas in the tank. Ben Affleck, Jennifer Garner, and Violet played in Sheep Meadow. Eartha Kitt, better known as Catwoman, says she’s 80 but still “burning.”