As you may have read on ChessBase, at one point in the Kramnik-Radjabov tiebreaks, there was a moment when Radjabov was literally seconds away from winning the Candidates quarterfinal match: all he had to do was draw a tricky (but objectively drawn) rook plus opposite-color bishop ending. After move sixty, there was a clock malfunction, and the arbiters took thirteen minutes (!!) to restart the blitz game. Kramnik managed to win and force yet another two-game blitz tiebreaker, which he also won, and with it, the match.
Interview here: congratulations to Teimour Radjabov for acting in such a sporting fashion after such a heartbreaking turn of events.
Incidentally, interest in the match was so high (and English-language real-time coverage so wanting) that The Week in Chess crashed: the TWIC live site is still offline.