Mark Hamill, who awesomely voices The Joker in Batman: The Animated Series among other things, was hanging out with Tara Strong, who voiced Harley Quinn in Batman: Arkham City and Batgirl in other stuff. The Joker hanging out with Harley Quinn? We want to go to there.
They recorded this Vine video of them talking in character. Turn on the volume in the upper left corner and prepare to be mesmerized.
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Holy priceless collection of Etruscan snoods! That laugh at the end is amazing.
(H/T: Geekologie)