What's your favourite TV show theme song?

The theme from F.R.I.E.N.D.S of course!

https://www.youtube.com/watch?v=DTEpiFcn0wI

Stick with it - it starts slowly and then takes off.......

or this one

https://www.youtube.com/watch?v=7rOMGIbY-9s

Used for h2g2

(also starts slowly, etc. etc.)

Theme from "A Summers Place" by Percy Faith Orchestra

The Theme song from the Andy Griffith show !

I have a couple

Andy griffith show

Mash

Miami vice

Cheers * Rawhide *Greatest American Hero* Star Trek

The theme from breaking bad

Wayside School, for nostalgia reasons :D

http://m.youtube.com/watch?v=hPV5xJOEiwo

Happy Days

Mission Impossible - the TV series.

The theme song from the remake of Battlestar Galactica.  Was just a woman speaking in I think hindi, but her voice was hauntingly beautiful.

I like this one :)

Well, in addition to some of the ones listed by others:

Theme from Peter Gunn:  www.youtube.com/watch?v=nz3WMFEC9Gs

Theme from Enterprise:  www.youtube.com/watch?v=-8OpsPok6iQ

Either digimon season 1

Or the Malcolm in the middle theme