Christopher Lee actually died Sunday morning (June 7th). Although Internet rumors were apparently circulated, the official announcement of his passing was delayed until family members were informed. But, yeah, it's unusual to hear of so many celebrity deaths on the same day.
Thinking back, I realized I've seen comparatively few of the movies Sir Lee starred or was featured in, but I can't recall ever thinking his performances were anything but perfect even if the movie wasn't particularly good.
Christopher Lee could have had a 3 minute cameo in a movie (in fact, I've seen this happen), and he would still be the best actor on the screen.