Pack up the beakers and Bunsen burners, stop worrying about atomic weight and absolute temperature - it's time for The Nerdist on BBC America! Tonight, Chris Hardwick welcomes heartthrob Jon Hamm from Mad Men, and the very talented Betsy Brandt from Breaking Bad. Join us as Matt and Jonah attempt to write a mash up script of both their shows, and enlist a little surprise help from Mad Mens', Rich Sommer - aka Harry Crane - to give it that extra oomph! All this plus comedian Rory Scovel and Doctor Who alum, Arthur Darvill joins the fun. Tonight, on The Nerdist!

Hey! What are you looking at? Oh! You're looking at us here at The Nerdist! That means you must be expecting a hilarious television program on which to train those big, beautiful eyes of yours. Well, you got it. On tonight's show we've got Joseph Gordon-Levitt, star of Lincoln, Looper and other blockbusters that don't begin with the letter "L!" We'll also have the talented and glamorous Gillian Jacobs joining us - she's the star of NBC's Community! We'll pit them against each other in our exclusive Nerdist "celebrity fact check!" Then Matt and Jonah get a personal tour of London given by none other than doctor who alum Arthur Darvill. All that, plus comedians Rob Huebel and Paul Scheer, and the usual smart and fun antics you expect from the Nerdist gang like "Nerdist Newsreels", "Quemments" and more