The Elder Scrolls IV: Oblivion Cheats

First you have to complete the Cure for Vampirism mission, and talk to The Count, Janus Hassidor. When you talk to him, ask him about the "Reward" conversation option, but don't leave the conversation, and keep asking him about it. Everytime you ask him about it you receive 1000 gold (or more depending on your level). Do this as many times as desired for unlimited gold. Note that a recent June patch has fixed this glitch.

This glitch allows you to easily repair and/or recharge items (armor, weapons, and staves) without having to carry around hundreds of pounds of hammers and soul gems, or having to visit a merchant in town all the time.
STEPS:
1: Have any item
2: Duplicate the item so you have two of them (or just buy an exact duplicate, but rare items have to purchasable duplicates)
3: While the items are UNequipped, go to the menu and hotkey them (there should be 2 of them) to any one of the hotkeys.
4: Use item to your heart's content (damage the item in some way)
5: Unequip the item using the hotkey button again. Then press the hotkey button one more time to re-equip it.

The item has been repaired and recharged. Go to your item menu to check it out for yourself. This works unlimited times, and as long as the item can be duplicated (or you can buy an exact duplicate) it should work.

Paintbrushes have no physics applied to them. By none, I mean none. When you drop them out of your inventory, they stay in thin air. They cannot be moved or blown away by spells/arrows.

Well, paintbrushes can be walked on.
You can jump onto a paintbrush (there is a small sphere of invisible walkable surface area). Drop another paintbrush infront of you, and you have a second step.
You can make a staircase of paintbrushes and, ideally, reach any point of the game. The catch? It's not easy to pull off.
If you jump too far, you'll be on the steep side of the walking area and won't be able to jump to the next paintbrush. Also, the walkable area is very small.

This glitch can get you high places like the top of a castle, high in the air randomly, or even on top of the Imperial Palace (watch out, the roof isn't solid, you need to stand on one of the things that stand up out of it).

During the last mission for the thieves guild, right before taking the drop, stop and head back down the tower the way you came. When you get to the original way you got into the tower (the fireplace in the Imperial Guardsmans sleeping quarters), activate the fireplace. It should give you the next part of the quest without dropping you into the hole. On this level of the tower, without going any higher, find an Imperial Guardsman and attack him, or be spotted by him. This should trigger the regular "Go to Jail, Resist Arrest, Pay Fines" dialog. Just pay your fines, and get teleported back out of the tower and in front of the castle. Both the Elder Scroll and the Boots should be in your inventory, and you should still be on the next part of the quest to head back to Gray Cowl. In my opinion, it's easier than trying to survive the fall.

1. Pull out any weapon(including fists)
2. Attack(Pull right Trigger)
3. Switch to inventory before attack ends(B button/red)
4. Equip any set of arrows and press A until a message, "You cannot change weapons while attacking" appears.
5. Drop Item you wish to Dupe
6. Exit Inventory and collect Duplications.

Note:
~The following cannot be duplicated; Stolen goods, one-of-a-kind items(Normally named something), Nirnroot, & Quest Items.
~The number of arrows in the set you equip will be how many the item becomes(at least)

1)Equip ANY set of arrows.

2)Draw your bow back,while its drawn back press B to go to your inventory screen.

3)Click on the arrows you have equipped with A and then on any other set of arrows you own and press A twice.

4)Now find an item you wish to clone and drop it. This doesn't work with every item.

Note that a recent June patch fixed this glitch.

Equip any set of arrows, go into any area of the game (preferably an enclosed area, like a fighter's guild basement), take out any bow, and hold R to keep an arrow in your bow. Now, you have to be a journeyman(?) of acrobatics, but if you can combat roll, that's what you need to do this trick. Hold L, press Y, and move in any direction to roll. You will hear the arrow fly, but it will not decrease in your inventory. Go forth and pick up your dupe arrow. Repeat as many times as you like.

To do this you need a horse and the more expensive the weapon you wield the better.

So get your most expensive weapon and wield it. Get on your horse and fast travel to either Kvatch to speak to the orc merchant, or to Silver Road in Cyrodill and speak to a merchant in green clothing.

Once you enter the barter screen, sell your equipped weapon. It will not vanish, allowing it to be sold over and over again for gold.

This no longer works after a recent June patch to the game.

Any time after you have finished the tutorial in the imperial sewers at the start of the game, you can kill a specific person and loot unlimited amounts of gold from them. Here's how you do it:

In the Imperial City, Talos district, find a house owned by a person named Dorian, it will be called "Dorian's House". Try to get him angry enough with you via threatening him. Once he has a low enough disposition (lower than 20) with him, he will ask you to leave. At this point kill him and go to loot his body. He should have around 40 gold and some other misc items. LOOT ALL THE ITEMS FIRST leaving the gold, DO NOT LOOT ALL. When you go to take the gold, it will glitch and keep allowing you to take the gold off him. Make sure he doesn't leave or alerts any of the guards and save before attempting this. After about an hour of hitting the same button, I had 150k gold. Note: You can bribe him before doing this glitch and you'll make more gold. This no longer works after a recent June patch to the game.

Ok, everyones been trying to figure out ways to do this, and this one happens to work. You may use a sword or your bare hands, it does not matter which. You MUST have more scrolls than the number of items you want to dupe for this to work. *Example* If you have 5 Strong Healing Potions, you MUST have at least six or more scrolls to dupe them.

1. Pull out a sword, swing it, then go to your menu in mid-swing.

2. Go to your scrolls section, and choose a scroll that you have multiples of, then click on them TWICE. You will NOT get a message like the other duping messages.

3. Drop the item you wish to dupe, and have fun!