Mostly from RTS:
"This is not Warcraft in space!" "It is much more sophisticated!" - Artanis, Starcraft
"Need a light?" Terran Firebat, Starcraft
"I-dentify Target..." (with matching accent) - Terran Siege Tank, Starcraft
"(*mimicking the Flight of the Valkyries)" - Terran Siege Tank, Starcraft
"Geronimo!" - US Airborne Infantry Regiments in Axis & Allies
"Would you like some tea, sir?" - British Mechanized Regiments in Axis & Allies
"It is a good day to die." Protoss Corsair, Starcraft
"For the end of the world spell, press Ctrl Alt Delete" - Sorceress, Warcraft 3
"I'll attract the enemy with my human mating call! - I'm so wasted! I'm so wasted!" - Dyrad, Warcraft 3
"In case of a water landing you may be used as a flotation device." - Terran Dropship, Starcraft
"What happened to peace?!" - Peacekeeper, Red Alert 3
"Who needs bombing today?" TEC's Krosov Siege Frigate, Sins of a Solar Empire
"These missiles won't fire themselves." TEC's Javelis LRM Frigate, Sins of a Solar Empire
"Opening new horizons..." TEC's Protev Colony Frigate, Sins of a Solar Empire
"Talk is cheap." TEC's Kodiak Heavy Cruiser, Sins of a Solar Empire
"Ready to swat some flies!" TEC's Garda Flak Frigate, Sins of a Solar Empire
"They're history!" -Chrono Legionnaire, Red Alert 2
"State the nature of your medical emergency!" - Terran Medic - Starcraft
"What do you think will take you home after the war, writing a book about it or fighting it?" Sgt. Reznov, Call of Duty: World at War
"Jerry's waiting..." "Shoot the f**ker!" "Get the f**kin' in there!" "Blow up that f**ker!" - Airborne, Company of Heroes
"Weakness is the greatest sin." - Golbez (from Final Fantasy IV), Dissidia Final Fantasy
"One way trip!" "Watch out for the bumps!" "FOR MY PEOPLE!" "Why don't you drive?!?" - Libya's Demolition Truck, Red Alert 2
"We're the Airborne! We're supposed to be surrounded!" - Airborne, Company of Heroes
"Don't mind the smoke. *cough* *cough* It's perfectly safe to breathe! *cough* *cough* - Moira Brown, Fallout 3
"Right...what the hell kind of name is "Soap", eh? How'd a muppet like you pass selection?" - 22nd SAS Capt. John Price, on then Sgt. "Soap" MacTavish, CoD4: Modern Warfare
"This is for the record: History is written by the victor. History is filled with liars. If he lives, and we die, his truth becomes written - and ours is lost. Shepherd will be a hero. Because all you need to change the world is one good lie and a river of blood. He's about to complete the greatest trick a liar ever played on history. His truth will be the truth. But only if he lives, and we die." - Capt. Price, intro to "Endgame", Call of Duty: Modern Warfare 2
"I'm just curious, why am I so good?" "You know who the best star fighter in the fleet is?" "Yours truly." "I am invincible, that's right." - Terran Wraith, Starcraft
"You called down the thunder..." "Now reap the whirlwind." - Terran Ghost, SC1
"I fear no enemy, for the Khala is my strength!" "I fear not death, for our strength is eternal!" - Fenix, Starcraft
"Have you ever noticed no one ever comes back to the barracks?" Terran Marine, SC2
"All your base are belong to us." "Who said anything about cake?" Raven, SC2
"I'm heavy metal!" Thor, SC2
"Not all who wander are lost...some of us are drunk." ""My reputation precedes me. Otherwise I'd be late to all my appointments." Diamondback, SC2
"We're grillin' and killin'" "Ahh...turns out I hate the smell of napalm in the morning." Firebat, SC2
"Obstruction detected. Composition: titanium alloy supplemented by photonic resonance barrier. Probability of mission hindrance: ZERO PERCENT!"
"Communism is the very definition of failure!"
"Democracy will never be defeated!"
"The last domino falls here!" - Liberty Prime, Fallout 3
"No cloud nor squall shall hinder us!" - Zidane, Final Fantasy IX