This is where you'd talk about the most epic final boss battles of all time from any game.
First one to be said must be MGS4's Old Snake vs. Liquid Ocelot.
You knew It'd be said near the beginning.
This boss battle is... Epic. It's got flashbacks to all the fights with him, Awesome music, the fight plays like (And looks like) a cinematic only you're in control, and the strategy required on each stage is different on the higher difficulties instead of mashing R1.
I love how the *Points hands like gun* "You're pretty good" was put in.
It's so touching.
All in all greatest final boss battle. For me at least.
Ooh, cool topic idea.
Greatest final boss battle ever for me was probably either the Hive Mind from Dead Space or GLaDOS.
I found GLaDOS was more of a funny battle but it was great.
And I never beat Dead Space :(