The world of Gossip Girl has plenty of nasty ladies to choose from, but, for our money, the absolute meanest TV girl has to be Georgina Sparks. The first time we hear her name, it's in connection with regular shipments of dildos and pornography from Switzerland. When she zips into New York on her father's private jet all hell breaks loose. At the end of the first season, she's shipped away to a super-strict boarding school, but that doesn't slow her roll one bit. After ruining Blair's wedding, we learned that she is actually the anonymous blogger Gossip Girl, which was quite a surprise.