A death using powers of the mind, or internal energies, variously known as "chi", "psychic energy" etc.
The effects are often similar to Magic (q.v.) but usually lack the trappings of incantations or spell components, and are marked by being explained as an internal focus of energy.
Psi energy in Western cinema generally requires intense concentration and sometimes has side-effects such as spookily glowing eyes.
It is almost always used for evil.
Chi is mostly featured in Eastern cinema, and is the reward for rigorously devoting oneself to the learning of various Martial Arts Styles with Cool Names. The effects manifest themelves at low levels as the ability to punch with the Force of Ten Tigers (not that we've seen many boxing tigers), but more experienced masters think nothing of hurling glowing bolts of raw chi at each other with explosive results.
Less aggressively, it can also be used to fly, walk on water and provide a shield from torrential waterfalls (useful practise for when it is raining).
The icon for this category is one of the creepy English children from John Wyndham's "The Midwich Cuckoos" (filmed as "Village of the Damned").