Recently I rewatched the anime Gundam Wing, which gets a lot of hate, but the story rewatching it is very complex. As a kid though all I was paying attention to is explosions and future action figure purchases.

About halfway or so into the series Wing Zero gets introduced and it's system. The system essentially fused the pilot's brain with the computer system so the pilot can fight better. How does it do that though? By making them experience an ego death. Nearly everyone in the show that used that system became nearly unstoppable after they stopped being afraid of death.The system pretty much shows them a vivid vision of themselves dying in battle.
I thought it was pretty funny that a mid 90s anime was using ego death as a major plot point.

Thats how wild animals are. Not afraid of death, cautious maybe, but when its time to stand and fight, thats what they will do. Also all the great warriors, war heros, and those who claim victory in a battle to the death. An opponent that is not hesitant to face death is about as intimidating as it gets. Thats how a small animal scares the hell out of a large human.

To truly live, you must be willing to die for the experience. Thrill seekers are a good example. Base jumpers, astronauts, gun stingers, they do things that could very likely kill them, and they are very much respected or feared for it. Even extreme sports.

You should watch evangelion... specially one of the first movies, I believed it was called "the end of evangelion".

There is an scene... where he breaks out and a weird music starts playing (komm suesser todd).

This is the watching order, more or less (you can go straight for the movie).
Evangelion TV series, 1995, about 26 episodes
Evangelion movies (the end of evangelion and/or other)
New evangelion ovas/reboot: from 2007 - 1.11 - 2.22 - 3.33 (upcoming 4.44)