Oooh.... this is gonna take a few minutes of reasearch...
Well, I have to start with the GoldenEye sniper rifle. It was the first (at least for me), and totally changed FPS. I'm sure there have been better versions since, but sentimental reasons keeps this as my fav. The silenced PPKs get a lot of love too, as they entrenched stealth in a genre that was once all mayhem.
The Particle Accelerator from the original Turok - froze/petrified an enemy then made him explode. This was my very first FPS, and my introduction to "over the top" weaponry.
Shrinker - Duke Nukem - shrink the bad guys, then step on 'em!
Farsight from Perfect Dark - even lets you look through walls!
Pheropod - Sure, there's tons of great uses for the Gravity Gun (especially with saw blads), but I just loved the idea of a puffball that causes giant alien bugs to consume my enemies.







