This theme song may arguably outlive all others on this list. The intro montage is as "classic" as you can get in the last 25 years, but is there really anything amazingly special about an intro I could've easily made in iMovie with rampant usage of the Ken Burns effect? The theme carries this one.
16. Freaks and Geeks
You could see a lot of ties to the Shameless one here, but the JD Salinger of television series' does a number of things great--the contrast between taking a nice school picture and trying really hard not to give a shit, the cast of now ultra famous characters brimming with youth, and a brash establishment right off the bat--you know what this show is gonna be about.
15. Jersey Shore
A trainwreck in the best way possible. You can't look away. You have to see what happens. Ratings. Shots.
14. The Big Bang Theory
If the band behind this sounds familiar, it's because they're none other than the Barenaked Ladies--better known for gems such as One Week and Pinch Me. What this show lacks in making me not groan every time it's on TBS instead of Family Guy, it certainly makes up for with an imaginative theme with an even more imaginative visual progression. For such substantial intellectual topics, the theme--and then the show--does great job ensuring you don't have to really think.
13. The Simpsons
As with anything that's existed for almost 25 years, this has gone through a number of changes--but the theme and general sense have managed to remain virtually the same, indirectly becoming timeless. Always exciting to see what will be written on the chalkboard and Springfield billboard every sequence. The version above is one of the few guest-directed versions of the intro, which was created by street artist legend Banksy.
12. Hey Arnold
Makes you want to be a kid in the big city. One of the best.
Meticulousness. Routine. OCD stuff. Other weird idiosyncrasies of a calculated killer. Right off the bat, an amazing sense of what the show's gonna be about.
10. Mad Men
The folks over at Paste Magazine did a similar list, and had the following to say about the Mad Men intro:
According to Mad Men creator Matthew Weiner, the concept of a business man jumping out of the window of his office building was always behind the development of the series. Inspired by advertisements (specifically graphic designers like Saul Bass), the enigmatic title sequence perfectly wrapped up the show’s themes of alcoholism, existential crisis, sexual promiscuity and quiet desperation—all in the faceless caricature of an anonymous business man.