Your Favorite Boss Battles of All Time?

[freebs2]

It's too hard to make top list, most of my favourite boss battles were from Metroid, Metal Gear and Resident Evil series.

But, If I have to pick a sigle game for the best boss battles it's definetly Alien Soldier.

    

(Oh yes. and The Great Mighty Poo would also be in my top 10)