Does Death Come in Threes?

You may have heard that Ed McMahon died several days ago, and today brought tidings of the passing of Farrah Fawcett and Michael Jackson...so is there truth to the adage "death comes in threes?"
History has countless similar stories. On November 22, 1963 John F. Kennedy, Aldous Huxley and C.S. Lewis all died.
Obviously people die every day but it seems to be especially shocking when the famous, those seemingly invincible stars that we admire, show that they are made of the same stuff as the rest of us.
R.I.P.