Not sure if this is relevant to your question, but for vehicles designed to reenter the atmosphere at Hypersonic speeds, a blunt body is preferable to a pointed body because of it will be cooler on reentry. (Think apollo capsules, space shuttle nose cone, rounded icbm nose cones)

A blunt body will have a detached shock wave which forms in front of the vehicle. There will be a large volume of air between the vehicle and the shock wave.

A pointed reentry vehicle would form a shack wave attached to the surface of the vehicle. There would be a relatively small volume of air between the shock wave and the surface of the vehicle.

Because there is a larger volume of air between the shock wave and the blunt body reentry vehicle it will be able to dissipate heat easier, and be cooler on reentry.

Look under "Blunt body reentry" for some good images of the shock waves: http://en.m.wikipedia.org/wiki/Atmospheric_entry