Will Arnett appeared on stage at the Oscars for seconds last night dressed as Batman during a performance of The Lego Movie's Everything Is Awesome.
Here he is getting ready to go on stage:
However, Lego Movie writer/producer Chris Miller had a few fun facts about the outfit:
The Keaton Batman suit was too "delicate" from aging, so obv the next choice was Kilmer — Chris Miller (@chrizmillr) February 23, 2015
And here's the full performance if you need a little help getting the week started: