Harry Potter and The Deathly Hallows Part 2
A lot of people didn’t know this, but Harry Potter’s archnemesis Lord Voldemort’s makeup was not entirely practical effects, but had a bit of CGI attached in post. This still took a few hours to put on and reapply, but it was all worth it when filming was done. Now Lord Voldemort is more sinister and scarier in the films than he is in the books.