Just a few days ago, we read about BlackBerry's patent on a hybrid resistive capacitive touch screen. This would give you the best of both worlds--the sensitivity of a capacitive screen for finger input and the flexibility to use a stylus when needed.
Well, it looks like HTC has a similar idea, according to its latest patent, but achieved more simply.
The Taiwanese company has concocted a stylus with a magnetic tip. Being able to conduct electricity, it simulates the human finger so it will work with regular capacitive screens.
The advantage is, of course, its thinness compared with our meaty digits, which makes it better for writing or selecting items very precisely. This will improve the writing of certain types of script and may even make playing games more enjoyable as your fingers won't be blocking what you are trying to see.