A friend just e-mailed me that question, based on the transitions of three celebrities in just a few days of each other: Ed McMahon, Farrah Fawcett, and Michael Jackson.
One common thread is that all three were icons who had their greatest fame decades ago. My thinking is that this relates to Pluto being opposite the Sun this week. Pluto in Capricorn is tearing down old structures that are no longer applicable or viable in our new reality -- and it makes sense that this would include role models and icons.
We may see more along these lines, since the Pluto-Sun opposition was part of the Solstice chart, which is considered an indication of trends for the next three months.