This series is a long-time favorite of mine from childhood...I rented the VHS tapes from my local Blockbuster and got hooked, even though "Mysterious World" was produced 4 years before I was born. Sir Arthur C. Clarke is a warm and intelligent presence in all 6 volumes of the series, even though (as a previous reviewer said) he does not narrate the series or have much of a hand in it. A particular favorite scene of mine involving this esteemed scientist is in the episode entitled "The Journey Begins," wherein he views and describes the natural mystery of a solar eclipse. I highly recommend this series to those who are interested in the unexplained...if you have never seen it before and are able to locate it on VHS or laser disk (and have the player for either format!), check it out.