Which celebrity death shocked you the most?

I agree with all so far, I'll add

Bob Saget

Phil Hartman

I knew right away whom you meant. I think I was shocked more by the suicide of Philip Seymour Hoffman about 6 months earlier. He wasn't as freaky as Robin, and comedians tend to have a high suicide rate in general. The weird part in terms of my "aftershock" is that they co-starred in Patch Adams, about an innovative health clinic founded by a creatively non-conformist doctor (Patch Adams) -- but it closed when the staff were disillusioned by the suicide of one of their patients.

James Gandolfini and Phillip Seymour Hoffman.

I never knew PSH had struggled with drugs.