Why Weren't Farrah Fawcett, Bea Arthur in Oscars' 'In Memoriam' Tribute?

Source: http://blogs.abcnews.com/celebritygossip/2010/03/why-werent-farrah-fawcett-bea-arthur-in-oscars-in-memoriam-tribute.html

Renee Zellweger Ricky Martin Salma Hayek Sandra Bullock