I missed it thinking it was on at 9 rather than 8. [D*mn you Osama!]
It's being rebroadcast at 1AM Saturday (tonight, an hour after midnight) on KCTS (Seattle PBS). Check your local listings.
However, I did catch a GREAT Frontline at 9. Hot Politics. I highly recommend it.
http://www.pbs.org/wgbh/pages/frontline/hotpolitics/