Sarah Silverman is pretty cute, but I dunno, kind of hit and miss as a comedian for me. There were two videos that I did find funny though:
[youtube=425,350]bJ-R5E6rySg[/youtube]
^ In this she plays a psycharistist meeting with Josh Homme, frontman of Queens of the Stone Age.
[youtube=425,350]eZTfzQvJh3Y[/youtube]
^ Here she is telling her version of the aristocrat joke.