Name: Gravity Gun + Phys Gun
Game: Half-Life 2/HL2 Beta
Reason: Who doesn't like launching people and stuff?
Name: Thermobaric Rocket Launcher
Game: Red Faction: Guerrilla
Reason: It blows stuff up.
Name: Personal Ion Cannon
Game: C&C Renegade
Reason: Handheld Ion cannon that kills infantry better than sniper rifles.
Name: Tophat
Game: One of the 007 games for the GC.
Reason: Oddjob only weapon, instant kill, slight homing, infinite range, and lastly it's a frikken hat.
Name: Plasma Cutter
Game: Dead Space
Reason: It's fun to see such recoil while watching limbs of enemies fly off. When I played this game, it was the only weapon I ever used.
Name: Fill Vulcan +10(?)
Game: Phantasy Star Online Episode 1 & 2
Reason: I found one with +45% hit. Imagine the damage done with very accurate machine guns. Not sure on the plus there.