Ever since the 1950s or so we have had so many UFO documentaries, some produced for cable television, and some for big networks. The network specials draw a lot of attention, but their impact is normally next to nothing. Most of the programs have become so damn opinionated that it is the same old formula as always. You have a person who is pro UFO and the other who is con UFO, and they go at each other and at the end the host throws in his or her own opinion and after an hour we are as undecided as we were at the beginning of the documentary
Anyway, there are still some good documentaries about UFOs and in this youtube age they are freely available online. I will embed these GooTube videos rite here.