'Sharknado' doesn't have the same bite in ratings as on Twitter Almost 1.4 million people tuned into Syfy Thursday night to watch "Sharknado," the movie about what happens when you combine a tornado and sharks. The disaster film spoof, which stars Tara Reid and Ian Ziering, became a Twitter sensation -- no doubt because of its hilarious title. There were 350,000 tweets about the movie -- a big number for a television program. While the numbers for the movie are solid, it is another example that Twitter activity doesn't always correlate with TV ratings. However, all the tweets and free publicity from news outlets looking to generate traffic by writing about "Sharknado" will likely mean the movie will continue to get decent ratings when Syfy repeats it. "Sharknado" wasn't just for kids. The median age for "Sharknado" viewers was 46.8, according to Nielsen.