Robin Williams gave a brilliant performance as both Daniel Hillard and Mrs. Doubtfire. It took about 4 ½ hours everyday to transform Robin Williams into the loveable nanny. The character was actually first performed by Robin at a show Andy Kaufman did at Carnegie Hall in the early 80’s, where he pretended to be Kaufman’s grandmother. Fun fact: During filming, Robin actually decided to test out the believability of the character by walking into an adult bookstore to make a purchase, all while dressed as Mrs. Doubtfire. He was able to do so without being recognized.