'The Big Bang Theory' referenced its history in a creative way in Thursday's series finale.

Barenaked Ladies wrote The Big Bang Theory's theme song specifically for the show, but its original theme was a pre-existing song.

TV 'Big Bang Theory' love song hits all the right notes Scientist Sheldon Cooper might be skeptical, but "The Big Bang Theory" proved that magic exists in the universe.

The theme song of "The Big Bang Theory," written by the Barenaked Ladies, seems silly and fun ... until you hear the rest of the song's lyrics.

Who sings the Big Bang theme? The Big Bang Theory theme song – which is called simply Big Bang Theory Theme – was written and performed by Canadian alternative rock band Barenaked Ladies.

While she may not have hit all the notes on Jimmy Fallon, I think we can all be impressed by the fact that she managed to get all the lyrics to The Big Bang Theory theme right.

The Big Bang Theory theme covers billions of years of science. Barenaked Ladies' Ed Robertson knows some of it needs updating.

Willis co-wrote the Rembrandts’ “I’ll Be There for You,” the theme song for Friends, and as Shukat notes, her 15 percent cut of the song alone brings in about $700,000 a year.

Twelve years after Barenaked Ladies wrote the theme song for “The Big Bang Theory,” the band returned to the megahit series to compose an acoustic version for the final episode. Vocalist ...

The Barenaked Ladies returned to "The Big Bang Theory" to compose an acoustic version of the theme song for the final episode.