Fallout 2/Awesome


 * The Oil Tanker cutscene.
 * Made even more awesome by Marcus' confirmation in Fallout New Vegas: He was canonically part of the team that blew up the tanker, meaning that The Chosen One, probably along with several other followers, stormed the place and kicked it's ass hard.
 * Killing the President by forcing him to overdose on whatever horrible drugs you gathered on the wastes is a very, very satisfying way to get rid of the self-righteous, genocidal bastard.
 * An even more satisfying use for the drugs is to go to First Citizen Lynette in Vault City, hear her rant about how much she hates the ghouls and how she'd rather have all her people die than give the ghouls medical supplies, then inject her with 5 super stimpaks and wait a few minutes for her to have a heart attack from the overdose and die.
 * In the same vein, the Mordino family has created untold misery by creating Jet and unleashing it into the world, all in the name of building up their own power. All it takes to break that power is to come up to Big Jesus Mordino and stick him with a single canister of Jet. You reap what you sow.
 * Somewhere between here and the Moral Event Horizon, after being forced into a Shotgun Wedding with an entirely useless and annoying character you can get rid of them by selling them into slavery. I shit you not. It'd be a horrible thing to do if they weren't so mind-bendingly bad.
 * The first time you ever use the NPC Goris in combat, he removes his cloak to reveal...
 * Pretending to be an Enclave recruit to gain access inside Navarro - First thing you encounter is a pissed off Drill Sergeant Nasty who chews you up. Then he orders . Thanks, you guys!
 * In Vault City, there's a woman whose husband started a fight in the bar outside the city proper and was forced to become a Servant to pay for the damages. To be able to save the man, you have to get into the city. With a high-Intelligence and high-Speech character, it's possible to  At the end, you'll have more money than you started with, the eternal gratitude of the reunited couple, and near-total access to Vault City.
 * The Chosen One, a backwards, uneducated, untrained tribal, storming the Enclave Oil Rig, slaughtering his/her way through the power armor wearing Elite Mooks of the Enclave, overloading the reactor so the rig will explode, rescuing his/her friends and family, and having a climatic final battle against Frank Horrigan (a 12 foot tall cyborg mutant super soldier), after which The Enclave is defeated and forever removed as a threat on the West coast. Yeah, mess with the Chosen One's friends and family and s/he'll take about a hundred levels in badass.
 * Alternatively, the Chosen One, a backwards, uneducated, untrained tribal, infiltrating the Enclave Oil Rig, wearing a suit of Enclave power armor simply strolls right in without harassment. Finds his/her friends and family, and keeps going. Eventually finding the president and assassinating him without anyone realizing it. Afterwards talking the head Enclave scientist into releasing the FEV virus into the ventilation system killing every Enclave citizen not currently in power armor or the government. Then proceeding to cause the Oil Rig's reactor to go critical and making a break for the exit. Just before escaping the Chosen One encounters an Enclave squad and convinces them to aid him/her killing Horrigan in exchange for a seat on the escape boat. Then in the final battle it's Horrigan vs the Chosen One, their small entourage of followers left in the entrance, and a squad of Enclave soldiers armed with some of the best weapons in the game. Roughly an equal fight, then the Chosen one turns the entire Oil Rig against Horrigan by setting the turrets against him. With that the Enclave is eradicated possibly without the Chosen One ever personally firing a shot.
 * After listening to Cameron explain how sometimes you'll face situations where cleverness alone won't be enough and you'll have to prove yourself by fighting, you can agree with him - or you can casually steal his key, unlock the door behind his back and stroll out, effectively proving him wrong.
 * Or prove him wrong by talking him out of the fight. Either way, after being forced into the Temple of Trials, it's a good feeling.