Check out this of the Arleigh Burke-class guided-missile destroyer USS Stout (DDG 55) launching a Tomahawk missiles in support of Operation Odyssey Dawn in Libya. Pretty amazing seeing the power of these missiles, and the U.S. Navy, up close and personal.
http://www.youtube.com/watch?v=aHjarKKZX8Q
(U.S. Army video by SPC Neil Standfield/Released)