Yes, Dan Aykroyd appears crazy in the recent documentary that he filmed. Spouting nonsensical babble about UFOs for nearly an hour and a half indicates that he is either starved for attention or losing his tenuous grip on sanity. Moreover, smoking cigarettes in a publicized video is bad form in 2016.
Actor Dan Aykroyd has become unhinged. He has produced a documentary merely of him smoking cigarettes and speaking about UFOs. As a child, he was diagnosed with mild Tourette syndrome and Asperger syndrome. But, he likely did not receive treatment since these syndromes have only recently come into the public's consciousness. Hence, his strange behavior.
Many people believe in UFO's. Many people throughout the world have stated that they have seen a UFO. Dan Aykroyd is among a growing population of believer's in life on other planets. Making a documentary that shows him talking about his beliefs while smoking a cigarette does not mean he is unhinged. The video is showing a side to Aykroyd that his fans don't see but has always been there.
Modern art is very strange. In the opinion of some art critics, the stranger and more absurd art is, the more quality it has. Aykroyd has only taken that concept from visual art and placed it into the medium of movies. People have made other documentaries that are of little value, but beauty is in the eye of the beholder.