It's on almost every other episode. Usually whenever there is a fight, or he flashes, or something with a lot of action is happening. It starts with clapping and grows into a rhythmic beat.
The Chuck-Will's-Widow got its name from its loud, whistling song that sounds like "chuck-will's-widow."
He song is called Africa, by Toto http://en.wikipedia.org/wiki/Africa_(song)
This song was designed for Chuck and you will regrettably never hear it anywhere else. It sucks because it is really good but that is all you can do.
Marty mcfly sings johnny b goode by chuck berry in bttf 1
Powerful Love by Chuck & Mac
The name of the song that plays at the end of the movie Zodiac is Hurdy Gurdy. The song is performed by Donovan.
With Me by Sum 41
it has to be me and you from up the trees of corse
The name of the song that plays when Belle is in the hospital is "Tale as Old as Time".
Chuck by Tim Jones (Charah's theme song)
They have no song on their myspace currently
It was never released it was made for Chuck. It is not actually a song it is designed to fit chuck.