Assuming a 150 lb person, you would yield ~1636.36 megatons. You'd get a pretty big hole and maybe clean off a couple of hundred miles in radius, but the rest of the earth would be just fine...
Of course, if ask me, just .36 MT would be too much if were anywhere, but say, Fallujah or something.
"Assuming a 150 lb person, you would yield ~1636.36 megatons."
You can double the yield by having said subject eat a can of Bush's Baked Beans(I'm not slamming the president!) before said energy release of said subject. You get the added benefit of nuclear and gas WMD attack!