If you haven't had the opportunity go pick up a copy of the "The Art of Ray Harryhausen"
I'll admit it, I'm one of those guys who goes all "nerd" when the name Harryhausen is brought up in mixed company. Very few people in our industry have had such a positive impact and been so influential. I could go on and on but I'm starting to drip nerd sweat all over my keyboard so I'll just leave you with....GET THE BOOK!!!