Channelling or channeling is the act of allowing a spiritual entity to take control of your body and speak through you, or at least that's what New Agers would have you believe. In reality it is usually just bad acting, sometimes combined with a bit of cold reading to impress the rubes. Channeled characters often take the form of either a mark's departed loved one or a long-dead alleged guru.
 Temporary possession
As in séances, this communication with the "spirits" is not considered to constitute a full "possession" as it is not seen as the complete, non-consensual takeover of a living being by a spirit or demon, something usually considered detrimental to the "victim" and requiring exorcism. Channelling is claimed by believers to offer opportunities for more positive and mutually respectful interaction between the living medium and the spirit. The most commonly-reported physical manifestations of channelling are an unusual vocal pattern or uncharacteristic physical behaviours by the medium.
 Evidence... or lack of
Channeling people from the distant past is rather easier than a conventional seance, in which the medium supposedly passes on messages from the recently deceased to an audience who knew the dead people in question. This requires a certain amount of skill in cold reading, or at least a certain amount of diligence in preparatory work to perform hot reading.
By contrast, channelers are free to make stuff up as they go along; there is no statement a channeler can make about (for example) the domestic life of Cleopatra which will positively be known by her audience to be false.
It would take considerable hot reading to convince a historian, an archeologist, and an expert in ancient languages that you were channeling Cleopatra; indeed, it would take actual scholarship, and anyone capable of it might give up their life of deception for a chair at one of the nicer universities. Interestingly, Cleopatra (or whoever is being channeled) always chooses to speak English (or any language the channeler speaks) when being channeled.
So far as we are aware, no channeler has ever done the research necessary to give even a moderately accurate impersonation of a historical figure. This might be because they recognize the extreme difficulty of the task, and find sufficient pickings among the gullible; or they may have convinced themselves that they really are channeling dead people.
 Shirley MacLaine
Actress Shirley MacLaine and the ABC television network gave this modern version of ghosts speaking through a medium a modicum of credibility. In 1987, ABC showed a mini-series based on MacLaine's book Out on a Limb, which depicts MacLaine conversing with spirits through channeler Kevin Ryerson. One of the spirits who speaks through Ryerson is a contemporary of Jesus called "John." "John" doesn't speak Aramaic--the language of Jesus--but a kind of Elizabethan English. "John" tells MacLaine that she is co-creator of the world with God. MacLaine, a consummate egotist, becomes ecstatic to find out that she is right about a belief she'd expressed earlier, viz., that she IS God (Gardner, 1987).
One of MacLaine's favorite channelers is J.Z. Knight who claims to channel a 35,000-year-old Cromagnon warrior called Ramtha. This preposterous notion has made her famous and wealthy. Some of her patrons pay as much as $1,000 to attend her seminars where she dispenses such wisdom as "[we must] open our minds to new frontiers of potential."
 See also
- Demonic possession, which is what many fundamentalist Christians think channelling is
- Marian apparition (some of these alleged apparitions such as the ones in Bayside, New York take the form of a medium "channelling" "Mary")
- Pleiadians, who apparently contact the Earth through channelers