Clip from a documentary about Troy Hurtubise, who has been on a quest to build an invulnerable bear suit to study wild grizzlies.
(note: sound track added)
UPDATE: The National Film Board of Canada has the full movie up for on-demand streaming! It may or may not work in your region, though: http://www.nfb.ca/film/project_grizzly
UPDATE 2 – A DECADE LATER:
RIP Troy https://www.baytoday.ca/local-news/troy-hurtubise-identified-as-victim-in-sundays-highway-17-fatal-963136