I bet you didn't think Joseph Gordon-Levitt would be able to dance like Janet. BUT LET ME TELL YOU, YOU'RE WRONG.
Because check out JGL on Lip Sync Battle literally doing full choreo to "Rhythm Nation."
Like, he learned all of these moves and then actually danced them.
In conclusion: JGL never ceases to amaze.
Here's the full performance. It starts at around the 2:00 mark, right after Anthony Mackie does his own impressive routine.