Most popular videos: 'Orange is the New Black,' 'The Rover' and Sonic the Hedgehog

The trailer for the second season of "Orange is the New Black" is released, Robert Pattinson sheds his Hollywood hearthtrob image for gritty new Australian thriller "The Rover," and viewers learn 10 things they never knew about Sonic the Hedgehog.

YouTube's top five Most Popular videos as recorded on Friday, April 18 at 3:05pm GMT:

Orange is the New Black - Season 2 - Official Trailer
First published: April 17
Total views: 1.9 million

Netflix's attitude-filled behind-bars series is back for a new season with the fearless inmates of Litchfield Prison. Starring Taylor Schilling and Jason Biggs, it is set to hit screens on June 6.

Why Do We Dye Easter Eggs? - Thought Glass #2

First published: April 17
Total views: 330,005

When did humans start eating cheese? Are carrots really good for your eyes? Why do we dye Easter eggs? Find out the answers to these questions and more in this short trivia clip.

Kicked in the Head by a Train

First published: April 15
Total views: 12.7 million

Canadian tourist Jared Michael's Peruvian selfie didn't exactly go according to plan, as he found himself kicked by an engineer on a passing train in the middle of his shot. Despite cries of a hoax, Michael has insisted that the footage was both real and unplanned.

The Rover - Official Full Trailer HD

First published: April 17
Total views: 197,663

Robert Pattinson sheds his Hollywood heartthrob image to star in this gritty Australian thriller as a member of a roaming gang alongside Guy Pearce. Set for release June 13 in New York and LA.

10 Little-Known Facts About Sonic the Hedgehog

First published: April 17
Total views: 217,000

Ten fun facts you didn't know about Sonic the Hedgehog, including the fact that his boots were based on Michael Jackson's from the "Bad" video and the fact that his attitude was inspired by Bill Clinton.