Kisame and Zabuza both went out like bosses. Those swordsmen of the mist know how to die like bosses.
Zabuza's for sure. He proved to that tool that he wasn't a tool, lopped dude's head off then died with tears in his eyes. He knew what was up.
Kisame's was good though. How about deidara. dude went out with a bang...
Itachi. He guaranteed konoha's peace in the cost of his clan and dignity but still he died smiling... That is a true shinobi for me.
Danzo's death is a part of what made him my favorite character. However, Hiruzen went out like a pro too.