One story on Radar Online offered the additional detail that he was a b-movie buff who once sent a letter to Joe Bob Briggs. (Curiously, Briggs was previously a contributor to The Daily Show in his other identity as John Bloom, host of the "God Stuff" segment. I expect this guy didn't know that.) The text of the letter to Briggs can be found at the preceding link, and also here if you scroll halfway down the page.
Turns out this wasn't the limit of this guy's science fiction-related correspondence. Check out the batty e-mail he sent to Sci-Fi.com:
With the passing away of Lexx ends an intriguing albeit smarmy experiment in sci-fantasy. One that breaks with conventions, or should I say, cliches of TV sci-fi of the '90s. The politically correct pabulum, the multicultural indoctrination, the Bladerunner motifs, and not the least—the steroid mutated superbabes that can punch the lights out of men, but never get punched back in return!?
How about creating a new sci-fi anthology with none of the puerile baggage of Rod Serling, Gene Roddenberry, Rockne O' Bannon, etc., etc. It is time to end their reign of Left-wing innuendo, their anti-American, anti-mankind cynicism and fatalism.
There's more of the same to be found at the link above. I'm kind of guessing this means he wasn't a big fan of Farscape, which is a source of great personal comfort to me.
Entertainingly, although the culprit was caught by the FBI in the act of mailing still more threatening letters in powder-filled envelopes, a few of the posters at Olbermann Watch are still insisting that Olbermann made the whole thing up.