Black Holes: How an Idea, Hated By Einstein, Became Loved, WNPR Connecticut Public Radio, September 3, 2015.
Episode 5 of Season 1 of a Discovery Channel show Curiosity: Parallel Universes - Are They Real?, September 4, 2011.
Also, Episode 10 of Season 2 of a Science Channel show, Through The Wormhole With Morgan Freeman.
Here is a fragment of this episode.
The full episode is available here, with Nikodem Poplawski appearing in the 32nd minute.
Episode of a NHK (Japan Broadcasting Corporation) show Cosmic Front: Power Over the Mysterious Universe of Gravity, November 13, 2014.
Here is a fragment of this episode, recorded at the University of New Haven.