Many a tale can be found in old television series which is better than those found in a current series. Below are some introductory themes from some favorite television shows of mine. They may be a bit old, by the standards of certain people, but whoever says what is old is useless needs their brain examined.
The Mithril Guardian
(I have not seen Airwolf, but I have researched it a little. Wheresyourcave was kind enough to remind me to include it in my next TV intro theme post, and here it is!)
Star Trek (Original Series)
The Big Valley
Hercules: The Legendary Journeys
Star Trek: Enterprise