If I had to highlight one of Smith's top effects, though, I'd point at something not as flashy as the spinning head of a possessed girl or taking a character from age 20 to age 100. I'd point you at this picture below... see if you can spot his work:
Nope, not the blood... I'm going to put on my best Morpheus voice and say, “What if I told you Robert De Niro never shaved his head in Taxi Driver?” That's a bald cap. The mohawk, stubble on the head... all built. How Dick Smith could hide De Niro's hair underneath there I have no damn idea. Bald caps always look fake. Always. But this one doesn't.
I always thought he shaved his head, mind blowing.