I lot of people really like the solid white background or high key look. You can do this on location as well if you have a reasonably white wall and enough distance between that wall and your subject. This is my typical setup:
Two flashes at roughly 45 degree angles to blow out the back wall (which was a slightly off white) and you will want to flag these to keep any light from landing on the back of your subject. Then I light the subject with a simple softbox on a boom arm to get a simple clean look like this:

The subject stands roughly where the white X is and then position the camera right in front. You need a fairly decent size room for this but I often find a hall works well. The main this in distance between the back of the subject and the wall to avoid spill off the back wall.
Here is a roundup of some of the best tutorials on achieving this style of image.
Zak Arias White Seamless Tutorial Part 1, 2, 2b, 3, 4, 5
Building an infinite white wall (for video but will work for stills as well
Lighting Infinite White from Videopia on Vimeo.
Seamless White Background @ Home Tutorial from Scott Bourke on Vimeo.
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