I, too, enjoyed "Medium," and I particularly enjoyed the jumping back and forth in time...present day Allison dreaming, and then teenaged Allison dreaming, with each of their dreams shaping their alternate realities.
Very clever use of the space/time conundrum....can Allison, facing a horrible truth about someone she knew in her youth, change the past in order to alter the future?
Several memories surface in dreams, and the teenaged Allison dreams of a future in which her adult Allison provides a validation of her talents that her mother (who apparently uses drugs to suppress any talents she, herself, may have) cannot/will not.
Peri Gilpin was excellent as Allison's mother.