I really hope this is the guy:

A California man suspected of mailing threatening letters containing a suspicious white powder to celebrities and U.S. politicians has been arrested and could face federal charges on Monday, the FBI said.

Investigators identified Chad Castagana, 39, of Woodland Hills, California, as the person suspected of sending more than a dozen threatening letters to media outlets and the homes of public figures in various cities, the FBI said in a statement on Sunday evening.

According to a federal search warrant, among those who received threatening letters were Jon Stewart of Comedy Central’s “The Daily Show;” talk show host David Letterman; Keith Olbermann of MSNBC; Rep. Nancy Pelosi of California, who is set to become Speaker of the House of Representatives, and Sen. Charles Schumer of New York, both Democrats.

This guy needs to face terrorism charges. That is exactly what he was trying to achieve through this little stunt of his. Sadly though the guy will probably end up making all kinds of money from this. I see an insanity plea and movie deals down the road.