If you missed Valve writer Erik Wolpaw's talk on Portal 2 at New York University's Game Center lecture series event last Thursday, don't worry -- we've got you covered. NYU has uploaded the entirety of Wolpaw's massive, hour-plus talk and the Q&A session that followed in video form (which we've embedded below the break).

Grab a drink and relax -- you can put that notebook away. There won't be a test or anything.