If you're still laughing at the four fake YouTube movie trailers Jimmy Kimmel rolled out at on the special post-Oscars installment of 'Jimmy Kimmel Live,' the late-night host has a treat for you -- a hilarious behind-the-scenes look at just how they made some of Hollywood's most celebrated stars turn their talents to the outing.

Some of the stars were super jazzed about the project, like Christoph Waltz, who was amped for the acting challenge of playing a hamster; some, like Seth Rogen, were a bit put out and confused about what their parts entailed; and a few went just a touch too far, like the Hemsworth brothers and their Method approach. And as the capper, Kevin Spacey apparently freaked out about having to call Sir Ben Kingsley by his proper name (and everything else).

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