SharkNado

It might have been the greatest television event of the year ... SHARKS climbing ropes, swimming down the 405, attacking helicopters and chasing Tara Reid up a flight of stairs ... but Derek Hough says he REFUSED to watch "Sharknado" last night.

Clearly, Hough was too closed-minded to see all of the awesomeness the made-for-SyFy movie had in store ... seriously, we counted 5 shark vs. man fatalities in the first 4 minutes.

In case you missed it ... the movie TOOK OVER Twitter last night ... with people begging for a sequel before the movie even ended.

Perhaps, "Lost" co-creator Damon Lindelof said it best ... writing, "I know it's only been 12 hours, but I'm not sure I'll ever be able to talk about anything non-Sharknado-related again."

People have already begun coming up with titles for the next installment ... here's a few we've thought up:

-- Psy-Clone: It's Raining South Korean Pop Stars
-- LouNami: Lou Rawls comes back to life to wreak havoc on the South Pacific
-- Heavy Rainn: Acid rain from a cloud that looks like Rainn Wilson melts San Diego