I'm thinking of a t.v programme I used to watch when I was younger and I can't remember what it was called. But it had a teenage girl in and I think her father was dead but she spoke to him through this type of light thing on her bedside cabnet can any one help me out it would be great if you could thanks leanne...

There was a show that sounds similar to this. But the father wasn't dead, he was an alien. She talked to him through a crystal cube. Read this:

Plot Summary for "Out of This World" (1987) (http://www.imdb.com/title/tt0092423/plotsummary)

im thinking of a t.v programme i used to watch when i was younger and i can't remember what it was called. but it had a teenage girl in and i think her father was dead but she spoke to him through this type of light thing on her bedside cabnet can any one help me out it would be great if you could thanks leanne...
I think you are thinking of a programme called out of this world. The girls father was an alien and couldn't come to earth or he would die. She was part alien and had some powers like being able to stop time. The glass thing was some kind of cross planet communication system