Unless you can obtain a copy of "The Mysterious Monsters," the 1975 Sunn Classic Pictures documentary -- hosted by Peter Graves -- that introduced the Patterson-Gimlin footage of Bigfoot at Bluff Creek, California, this documentary is about as good an introduction to Bigfoot as you will find. This video does contain the famous Patterson footage, as well as remarks by the late Dr. Grover Krantz, and the retired Peter Byrne, two of the most (in)famous Bigfoot researchers ever.
The video is broken into five "acts." Act 1 describes the history of bigfoot, citing such individuals who have recorded large, hairy creatures as Leif Erikson, Teddy Roosevelt, 19th-century missionaries in the Rocky mountains, and relevant Indian tribes. Act 2 is devoted to the Patterson footage. Acts 3, 4 and 5 describe the international interest in the creature, and also include some video footage taken by two men who were trying to capture Bigfoot on video. Did they? I will admit that their footage of two distinct eyes peering at them from a shadowy copse is intriguing and quite creepy. It is not, however, anything compared to Patterson's footage.
If you are interested in Bigfoot documentaries, there really is not much available these days. Some claim that the best documentary ever made was The Mysterious Monsters, but you may have difficulty finding it (although it IS available. Use your Internet imagination and see where it leads you).
One last thing: "The Hunt for Bigfoot," hosted by Clu Gulager, has got to be the most preposterously shameful excuse of a so-called documentary ever created. It is a transparent sham, and in no way should be mistaken for respectable research into the Bigfoot phenomenon. DON'T BUY IT!