I'm with Skysaw on this one. The TV can be a hindrance, but I had a lucid dreams last Friday evening that was assisted by the TV.

I was very tired, and I kept falling asleep and jerking awake on the couch. The program (it was the History Channel) would be audible whether I was asleep or awake. Eventually, I found myself waking and falling back asleep directly into a dream over and over. After a few cycles, my consciousness was unchanged whether I was awake or asleep. It was a repeating cycle of groggy waking and lucid dreaming, narrated by the TV.

Hmm.. better copy that to my DJ.