Best FPS weapons of all time?

[Dolla Dolla]

Perfect Dark - Laptop Gun is a definite mention. Loved that thing.

Perfect Dark - Boost pill, one of the first instances of Matrix-esque slow motion. If you took the boost pill, the entire level slowed down, enemies, teammates, bullets, everything for about 15 seconds. And it was awesome.

Goldeneye - I was never a big fan of proximity mines (set it and forget it). I preferred remote mines myself.

Turok 2 - Cerebral bore. No explanation needed.

Doom - BFG 9000. Eliminate all enemies on screen. Beautiful.

Edit: Wolfenstein 3-D Doom - The original Chainsaw (I was remembering chainsawing in a wolfenstein level, which actually was hidden in Doom 2, hah)