Comedian Robin Williams took hi own life in 2014.
Williams is still considered one of the funniest people of the last fifty years.
There is a new documentary about Williams on HBO called 'Come Inside My Mind.'
The documentary has interviews with Williams friends and co-stars, as well as outtakes from his films.
Critics like the HBO documentary, giving it very positive reviews.
CNN's Brian Lowry called the doc "a fitting tribute" to Williams.