So, I haven't seen this topic around recently and I'm surprised, it's a pretty generic topic..whatever it's here now.
What's your favorite Boss Fight in all of gaming? My personal favorite is Skorge from Gears of War 2. Purely because of the chainsaw battles, riding on a reaver and the room you fight in during the first stage of the Skorge fight, it looks amazing. Another reason I adore Gears 2.