Update:
Agent Smith (The Matrix)
Alpha 5 (Power Rangers)
Ash (Alien)
Bass (Mega Man)
Bomberman (Bomberman)
Brainiac (DC Comics)
Bumblebee (Transformers G1)
C-3PO (Star Wars)
Calculon (Futurama)
Clank (Ratchet & Clank)
Different Turret (Portal 2)
Dinobot (Beastwars)
The Doctor (Star Trek Voyager)
Dog (Half-Life 2)
E-102 Gamma (Sonic Adventure)
EDI (Mass Effect)
Emeralda Kasim (Xenogears)
EVE (Wall-E)
Grimlock (Transformers G1)
HAL 9000 (2001: A Space Odyssey)
The Iron Giant (The Iron Giant)
Jinzo (Yugioh)
Marvin (Hitchhiker's Guide to the Galaxy)
Mega Man (Mega Man)
Megatron (Transformers G1)
Metal Sonic (Sonic)
Motoko Kusanagi (Ghost in the Shell)
Optimus Prime (Transformers G1)
Porygon (Pokemon)
Rin Kagamine (Vocaloid)
ROB (Nintendo)
Robo (Chrono Trigger)
Robo-Ky (Guilty Gear)
Robot (Lost in Space)
Robot Santa (Futurama)
Sentinel (X-Men)
Sharon 'Athena' Agathon (Battlestar Galactica)
Sovereign (Mass Effect)
Starscream (Transformers G1)
T.O.M. (Toonami)
T-1000 (Terminator 2)
T260G (SaGa Frontier)
Tio (Grandia 2)
Thursday (Disgaea)
Tom Servo (Mystery Science Theater 3000)
Ultron (Marvel Comics)
WALL-E (Wall-E)
X-ATM092 (Final Fantasy VIII)
--
Still smilin'
:>