I'm usually sceptical when it comes to paranormal documentaries (paranormal witness not included) however, this series is a refreshing change to the norm. As mentioned by other reviewers, some of the videos appear fake but there are many others that are difficult to explain and they're often quite creepy. The show generally offers an objective view for each video and in some cases they are debunked by the various guest speakers, which makes it alot more enjoyable to watch.
The videos also have good clarity, so you're not forced to watch grainy footage.
I particularly enjoyed the humorous but creepy baloon video in season 1 episode 8.
Would highly recommend.