[mecharobot]

Legend of the Galactic Heroes is filled with these so it's a tough choice:

Spoiler for LOGH ep 98:

I'd say Reuntal's death was the most epic one. After being fatally injured, he awaited for the longest time to have a drink with Mittermeyer. He didn't survive until then so the Gale Wolf only found two glasses and his child left behind when he finally arrived.

Rose of Versailles:

Spoiler for Rose of Versailles 39-40:

There are two in rapid succession here. But I'd say Andre's demise was the more epic one. The final words in here are the most impactful I've ever heard.

"That's right, I can't die. Everything is just starting. The dawn of a new age and the love between us. I can't die at a time like this. I won't die..."

Followed by Oscar's heartfelt answer, when she didn't notice that he wasn't there anymore. And the next episode... "Adieu". Maybe it was for the best.

SDF Macross:

Spoiler for SDF Macross ep 18:

Focker comes back to his lover and plays guitar. Just like it was a normal day. Then he falls over and dies to his injuries.

Hokuto no Ken has quite a few as well:

Spoiler for Hokuto no Ken 56-57:

When Rei keeps his back turned to Mamiya and shouts at her:

"Don't follow me... I don't want you to see my horrible death"

I think Rei let some of his emotion to be heard in that sentence. Then he went into the abandoned building and died alone. No one went to check on his body. They burned the building with him. Followed by Ken's epic words:

"Your legend will never fade."