That said, there seem to be a few organisms that are capable of surviving these harsh conditions. In a recent paper, tick were able to survive 30 minutes under the electron beam in high vacuum conditions.
For normal scanning electron microscopy, biological samples need to be stabilised (fixed), dehydrated, dried and coated with a conductive coating (metal or carbon) before being placed in the electron microscope. However, the ticks in this paper have not been subjected to any of those treatments and are placed directly into the microscope while still alive. The video shows them moving under the beam. After their 30 minute exposure the ticks were taken out and lived for approximately 2 days after the ordeal.
This is rather impressive. I don't think it will start a wave of imaging living samples, however. The vast majority of animals will not withstand the vacuum, let alone the harsh electron beam.
Journal article: http://www.plosone.org/article/info%3Adoi%2F10.1371%2Fjournal.pone.0032676
Video shown below.