One of the best/worst made for T.V. movie's  Sharknado 2 : The Second One, did so well Wednesday that it gave the SYFY network it's best ratings EVER.   The campy movie was seen by 3.9 million viewers, and Twitter saw Sharknado conversations reach one billion, not one million but on billion.    Did you miss it?  Sharknado 2 will replay Saturday night at 7pm on the SYFY Network.                           Getty Images