Put away those hand puppets. Stop sketching stick figures in that flipbook. Cancel the Team Fortress LARP session you were planning. Finally, there's a much easier way to show people that totally badass move you did in TF2 last night: introducing the Replay System.
Never again will you have to resort to grunts and potentially lewd hand gestures. Replay-enabled servers record every round of the action, allowing you to make movies of your awesome performance (and the embarrassing performances of others) in the Replay Editor, using different camera angles, sexy motion blur and antialiasing.
On top of the new replay editor, Valve are hosting an awards ceremony in two weeks time for the best efforts from the community in twenty categories, including 'Best Mid-air Murder', 'Best Cinematography' and 'Most Extreme Stunt'.
There's also a new comic for people to peruse (with possible frames from Meet The Medic in the last page), and more information on the update available on the official site.