The Elder Scrolls IV: Shivering Isles Cheats

Create a fortify acrobatics spell with magnitude 100 for 2 seconds (you only have to have 25 restoration.)
Fast travel to crucible. Walk straight through the town to the door to Bliss. Turn right and walk up the stairs to where the Dark Seducer is standing. Cast the spell and jump over to the rooftop to your right. Then again the the roof West of you. Hop up to where the stool is and then jump on the chimney thingy infront of you. Jump onto the roof infront of you and you are now free to walk wherever you want around the shivering isles without any buildings, creatures, or basic graphic design in your way. Try walking back to the portal and then into the Emean Sea until you can't go further then look at the island, nice view eh? When you get tired of it just fast travel anywhere. (This was aimed at 360 owners who don't have the abilities to manipulate the game as computers do.)

This glitch allows you to duplicate items by using scrolls:

Step 1: Go to your inventory.
Step 2: Equip any scroll that you have multiple copies of (ex. 5 "Superior Convalescence").
Step 3: Once the scrolls have been equipped, press A again while still in the inventory.
Step 4: Drop the item you wish to duplicate (ex. Grand Soul Gem) - you must have less items than scrolls or it doesn't work.

You will now have the same number of items(ex. Grand Soul Gems) as you have scrolls!