Know what this thread is missing?? THEME MUSIC!

Starting with my favorite the best show ever, with an extremely appropriate theme/title sequence.  Admittedly it probably doesn't seem as good if you're unfamiliar with the program, in which case... you poor bastard.  I imagine this sequence will seem much better if you've seen at least a few minutes of the show, particularly from the intro to the start of the theme in the pilot, from the war flash back to Mal's sad delivery of "Right... we win."
[youtube]http://www.youtube.com/watch?v=LrAS20mNZUE[/youtube]

M*A*S*H theme, the show plays a shortened instrumental version of this song.
[youtube]http://www.youtube.com/watch?v=4gO7uemm6Yo[/youtube]

Coming in at a close second best show/theme song.
[youtube]http://www.youtube.com/watch?v=RmtFgvHiZXA[/youtube]


I really don't know if there is any difference between the new one and the old one, I listened to them both, they sound basically identical.
[youtube]http://www.youtube.com/watch?v=T7Ba_jz22sI[/youtube]

This one isn't exactly a theme, but it's the most prominent song in the movie, this is some sort of soundtrack edit.
[youtube]http://www.youtube.com/watch?v=oa5Py3i-h8c[/youtube]

Again this is the entire version of a song used in a shorter opening sequence.
[youtube]http://www.youtube.com/watch?v=n6jCJZEFIto[/youtube]

Theme to a severely underrated show, it used an abridged version of this song in the title sequence.
[youtube]http://www.youtube.com/watch?v=Tt4lbP8C8Nw[/youtube]

If Supernatural had a theme, this would be it.  It was used prominently for a couple recap sequences.
[youtube]http://www.youtube.com/watch?v=al12WO5x23w[/youtube]
Bonus feature that came up after an episode ended.
[youtube]http://www.youtube.com/watch?v=HsyMtYoSkC0[/youtube]

Alphas on SyFy had a short song written for it's intro so this is the whole thing, but I heard they're going to expand it to a full length song.
[youtube]http://www.youtube.com/watch?v=Bq4mpx3LFrc[/youtube]

Now for a theme song that was only fictitiously expanded to be longer.
[youtube]http://www.youtube.com/watch?v=36iESTXzX54[/youtube]