In one of the stranger interviews to promote The Third Man Factor, John Geiger makes a cameo appearance on William Shatner's Weird or What? on History Television, on Thursday Sept. 23, at 3 and 8 PM EST.

Here's what History Television says about the show: "We're all fascinated by mysteries and strange phenomena. But is the unexplained really unexplainable? In this irresistible new series, join science fiction legend William Shatner as we investigate all that's weird in the world and attempt to find a logical, scientific explanation. From paranormal phenomena to weird and wonderful creatures, from medical oddities to mysterious disappearances, from bizarre natural disasters to mystical monster attacks, this absorbing series has a deliberately wide brief."

Shatner, of course, played the part of Capt. James T. Kirk on the original Star Trek.