Oh no, I instantly forget all my favourite things when I'm asked like this!
I'm tempted to say Godzilla: King of the Monsters, mainly because it's exactly the kind of kaiju movie I wanted so badly as a kid. It's not perfect, and some of the human characters are extremely irritating. But the battles are huge and impactful, and nothing beats Godzilla and Ghidorah throwing down using modern special effects!