I am lucky enough to be a child of the 80's... so I got to see some real classics when I was young.
Opening themes....
http://www.youtube.com/watch?v=HcGNqrAtsgg
http://www.youtube.com/watch?v=WDQzALOH9iU
http://www.youtube.com/watch?v=2pDZpNNLXlM
http://www.youtube.com/watch?v=nLS2N9mHWaw
http://www.youtube.com/watch?v=-vSD8DliZ1w
http://www.youtube.com/watch?v=7yeA7a0uS3A
http://www.youtube.com/watch?v=6O7qBbdZZYE
http://www.youtube.com/watch?v=e-JHfXVlkik
http://www.youtube.com/watch?v=EnuGhuNZnFs
Sometimes I'll watch an episode while I'm modding, or cooking, or cleaning house, etc. And they are always good for a laugh. I actually remember most episodes extremely well once I start watching it. These shows really had an impact on my imagination when I was little.
The 90's had lots of great shows too, but I was getting interested in other hobbies by then.