This is how to make a good first impression, TV shows.
The Persuaders
"So you're basically just going to have Tony Curtis and Roger Moore wondering around being cool in various glamorous locations?"
"That's roughly the idea, yes."
"And is the theme tune by John Barry?"
"Yep."
"Okay, works for me."
Countdown
Because for several generations of British students and senior citizens alike, this made such a profound impact that, as they draw their final breath and depart for the hearafter, the last noise they hear in this life will probably be "be-doop-be-doop bippityboop BONG."
The Shadow Line
Hugo Blick's smart, strange and superbly acted crime drama got perhaps the finest of the modern minimalist school of opening titles - nothing but a prowling red laser, dust, and a bullet in the darkness, all backed by Emily Barker's haunting theme song.
Gladiators
Because this list wouldn't be complete without a triangular spaceship flying through a television flesh tunnel to rescue a power ballad that's being held hostage in the galaxy of floaty faces.