Ginormous! That's what it comes down to. We love looking at giant movie monsters because they're towering, awesome, eye-boggling, huge. They were made for the five-year-old in all of us. But some giant monster movies are better than others, and here's my list of the top 12 of all time. You'll notice some omissions, and they are not accidents: “The Host” has a good monster, but sorry, I think it's a turgid movie, and “Tremors” is one-joke intentional camp. “Pacific Rim” has a great deal of affection for the genre, but it's still an overly mechanical nostalgic stunt. Here are the 12 you can watch forever.