This short video will show you how to Remove Objects in Photoshop Using the Content Aware Tool
Performed on a Mac using Photoshop CS6.
Use the Content Aware Tool by hitting Shift > F5, or using your menu, go to Edit > Fill > Content Aware
Need to clean up your image, remove something (or someone) unsightly? This Photoshop Tutorial will show you how to easily remove objects in a photograph using the Content Aware Tool, and make it look like they were never there at all. Depending on the complexity of your photo, you will need to play with it a few times before you get the results you want. Use your lasso tool and draw loosely around the object you want to remove, making sure you don’t include other visible objects in your selection. Hit Shift > F5 > Content Aware, and, boom – the item is gone. If you can’t avoid sampling other close items while you draw, use the clone tool later to clean it up. Just remember: save a copy of your original and you have nothing to fear.
Do you want to learn how to add more to the original background for purposes of bleed, or because you just need more room? Check out this Tutorial: How to Replicate the Background Using the Content Aware Tool in Photoshop.
For my PC brethren, remember: Command = Control and Option = Alt.