Automatic writing.
Automatic writing partisans claim they can communicate with angels. Sounds hard to believe, but one of the greatest scientists of this century - Carl Gustav Jung - talks in his works about "spiriitual guides" - entities pretty close to the well known "guardian angels".
Basically, it is a meditation technique - accesible to everyone - aiming to leet the subject get in touch with his own unconscious. The results are, reportedly, spectacular.
1. An introduction to automatic writing http://angelsplay.com/learningctr/auto.html
2. A touching testimonial: http://www.spiritlink.com/phases2.html
3. A deeper look at the subject can be found at http://automaticwriting.com/
4. And the opinions of a skeptic at: http://skepdic.com/autowrite.html