The Scientists' Open Letter on Cryonics includes signatories of the calibre of Eric Drexler, Robert Freitas, Marvin Minsky and Gregory Stock, to pick just a few. "Cryonics is a legitimate science-based endeavor that seeks to preserve human beings, especially the human brain, by the best technology available. Future technologies for resuscitation can be envisioned that involve molecular repair by nanomedicine, highly advanced computation, detailed control of cell growth, and tissue regeneration. With a view toward these developments, there is a credible possibility that cryonics performed under the best conditions achievable today can preserve sufficient neurological information to permit eventual restoration of a person to full health. The rights of people who choose cryonics are important, and should be respected."

Link: http://www.cryoletter.org/