Website such as bodyswitcher.com gives you a platform through which you can put your face on another body. On the site you swap bodies with famous people or a person in a funny scene. There are numerous templates and each template is basically an image of someone and you can put your face on their body.
1 Additional Answer
You can put your face on another body using a photo editing program, such as Adobe Photoshop. You can save a picture of your face onto your computer, along with a picture of another body. Cut and paste, following the appropriate editing prompts!