10/22/2008 10:19 am ET | Updated May 25, 2011

Live From New York, It's....Barack Obama?

Well! Brian Williams hosted SNL this evening and journalism did not implode But — whatever will the other candidates say about tonight's surprise cameo: None other than Barack Obama, showing up in the cold open as a surprise guest in a Hallowe'en party thrown by Hillary Clinton (played with icy smugness by Amy Poehler). A presidential candidate on SNL? Guess BriWi's gravitas is safe. Here's the vid:

Other fun special guests were Bono, making a cameo as we predicted, plus old-timer Horatio Sanz as Bill Richardson — plus Canadian songstress Feist (seen below with Williams getting, er, Feisty). Here are some stills from the show, plus Williams' idea for a new Nightly News theme. Full report tomorrow!

Update: Here from the AP so far...