This is an excellent piece, excerpt:
The standing ovation was tremendous. "I was initially shocked by the disjunction between his intellectual capacity, which is completely undiminished and in many respects unequaled, and the physical degradation," says Richard Wolin, a professor of history at the Graduate Center of the City University of New York, who was in the audience. "But after five minutes, I lost sight of any physicality and focused on his words and their importance." He adds, "It was one of the most moving scenes I have ever witnessed."
Here is my previous post on Tony Judt.