Though some are redundant to a certain extent, I watched all 13 episodes. Naturally, a few hold more interest than others. For example, "Giant Squid Found?" was absolutely fascinating. Attaching a camera to a 6 ft. squid, and seeing what the squid saw at 1000 ft. beneath the surface was amazing. There is a certain amount of interest generated, even though nothing was found. To some, the hunt is the most satisfying part of any adventure, with a plausible explanation only leading to a letdown. About half the episodes I would rate above average, and that provides 6 hours of entertaining quests, well worth the purchase price of less than $20.00. - MERK