Darth Canoli
Arcane
What about bosses that weren't as hard as they could've been? I can think of a couple.
Zuggtmoy from ToEE. Push over compared to the Hedrack encounter and the boss of the Fire plane.
The undead dragon from Gothic 2 (provided you use a certain spell).
Any game where you can talk the boss to death, Fallout, PST and Arcanum for example.
In PST, talking the last boss to death makes sense as he's you but I always thought Fallout's one was ridiculous.
Wasteland 2 Steel scorpion or whatever it's called was pitiful, what a waste of good art.