Allison Williams made a surprisingly delightful appearance on Jimmy Kimmel Live last night — and I say "surprising" not because Allison Williams seems incapable of being delightful, but because Marni, her character on Girls can be so uptight and humorless that it's a little hard to imagine Williams as being any different in real life (actors be acting!). She and Jimmy spoke a lot about her father, NBC News anchor Brian Williams, and Allison confessed that she often imagines what it would be like if her dad had to report on her untimely death. Turns out, he wouldn't be too bothered by it. Brian Williams, consummate professional.