The male characters of the hit TV series How I Met Your Mother are constantly helping each other get into and out of situations. The book Bro on the Go contains the code of honor necessary for maintaining such friendships.

UNICEF Goodwill Ambassador Katy Perry delivers a special weather report on the devastating effects of climate change for the world’s children.

Barney never fails to impress the group with the lengths he'll go in order to get a woman interested in him.

In this week's Lightning Round, Neil Patrick Harris and Billy Eichner take to the streets to find out how New Yorkers feel about the end of the series How I Met Your Mother.

Jimmy Fallon can't believe he's at the White House on the Fourth of July. Watch part of his stand-up performance from that evening in which he does impressions of ten other comedians!

Have you ever wondered why English seems to have roots in so many different languages? Here is a look at what words the Anglo-Saxons and Vikings brought to the English language.

The cover letter is an essential document when submitting a job application. Here you can learn about what function a cover letter should serve.

When Penny returns from visiting her family in Nebraska, Leonard is happy to see her. Sheldon, however, is much less welcoming when he learns that her family has the flu.

Leonard finally tells Penny how Sheldon saved his life and broke the elevator at the same time.

When Penny dislocates her shoulder, Sheldon brings her home from the hospital and tucks her into bed.

The boys decide to go to Long Beach in order to keep lying to Penny.

Hunger Games star Jennifer Lawrence discusses the end of the franchise, her hilarious relationship with Josh Hutcherson, and much more.

Up-and-coming actress Jennifer Lawrence makes a humorous speech after the Oscars and shows that she is still quite down-to-earth, despite her recent success.

Rachel's English: Practice relaxing the tongue when saying words and phrases with the "n" consonant. Study with Tom!

Released in 1968, the animated film "Yellow Submarine" was inspired by the music of the Beatles and featured them in person as well. The spirit of 1960s counterculture is well-represented in this trailer. Enjoy!