MITM was covered for the Lego Batman Movie.

[Ms. BlueGangsta]

Here's the cover.

And yes, I do believe that the cover is in the actual movie.

 

[Michaels Lover]

Pretty good cover

 

[MJTruth]

Pretty good cover

Yes this cover is in the movie.
When the movie starts they print a quote from Man In The Mirror on screen, crediting Michael Jackson. But then Batman says something like "No. I said that. Batman is very wise", and replaces Michael Jackson's name with his own.

Then at the end of the movie they play this cover of Man In The Mirror. It's a shame they didn't use MJ's original, but the cover is good enough.
I wonder whether

(a) The Estate wouldn't let them use Mj's version (in which case it was a missed opportunity;
(b) The MJ Estate were charging too much money to allow the use of the song (unlikely I guess);
(c) The guys in charge of the movie didn't want to use MJ's version for some reason.

Either way it's a nice little bit of MJ promo.