Philip Seymour Hoffman's sudden death unsurprisingly prompted a deluge of tweets from fans and fellow actors. The 46-year-old father of three is widely considered to be among the greatest actors of our time, with his portrayal of Truman Capote having earned him an Academy Award in 2005. The social media reactions betrayed, as they tend to do, a mixture of shock, grief, and expressions of admiration for the profundity of his impact.