Yup, sure, just add the following near the top of your page,
Code:
To see this page sideways close your eyes tilt your head 90 degrees to the right or left, then open your eyes.
HTML doesn't have these capabilities. You could potentially do it with a flash page, but don't really see why anyone would want to do this as it would be a horrible user experience. If you wanted to rotate an image you would need two different image files showing the different rotations, and then you'd use JavaScript to switch out the files.