Lost In Space "The Lost Civilization"

 This episode is really cool because they go to an underground world where an alien civilization lives. Naturally it's a hostile civilization but sets from VTTBOTS can be seen here, plus some from earlier Lost In Space episodes, like the freezing tubes and those silly cog-wheel things.

You can click on these to ENLARGE them, they are blu-ray highly-detailed.

THE GREEN HORNET ep7 "Beautiful Dreamer"

 Part 1 of 2:

Part 2 of 2:

Last we saw this man was in Outer Limit's "The Guests"

The Hindenberg (1975)