Lethe - In greek mythology there were a number of rivers in the underworld. Lethe, translated "forgetfulness" or "oblivion" was a river that had to be crossed to get to elysium. The myth goes that when the shades of the dead (ghosts) drank from the river they forgot the life they were leaving so they could be at peace in the afterlife. Of important note is that when people were brought back to life (by gods for wars, etc) they had to drink from the river again to forget death and go back into life.

I really like transitional concepts like this. Its been my pen name for quite some time, and it seems fitting for a moniker on the web.