Obscurity factor: 6
It's 2053 and the earth is experiencing a rash of earthquakes. To protect the country's wealth the president (Richard Basehart) recalls the former commander of Pacifica, a fabulous submerged city to help direct the transfer of gold as well as a new, highly radioactive element from Fort Knox. There's dirty work a foot, however, when the commander's brother (Wagner) plots to steal the newly transferred loot. Add to that the fact that an asteroid is on a collision course with earth, due to hit close to Pacifica and you have a four star action plot.
This film (though cheesy by today's standards) has a great sci-fi vibe, thanks to director/producer Irwin Allen. Fans of Allen's previous series will recognize lots of props, actors and music from those productions. This TV film - a failed episodic series pilot - was recently released on DVD by the Warner Archives collection. Above is the trailer, uploaded to YouTube by GeneAvenir.
Obscurity factor: 6 (on DVD, known to Allen fans, otherwise forgotten)