I watched a good one on YouTube before following the journey of someone possibly with dignitas undergoing assisted suicide which was very well done, I can't remember the exact name but I'm sure if you searched for those words it would come up. There was also a good one Louis Theroux did about assisted suicide, I find his documentaries good because he never comes across as vehemently opposed to any subjects but more in a curious fashion, I think it was called Choosing Death or something similar.