I am always buying TV series. Amazon and DeepDiscount have great deals every month. (usually free shipping)
It is amazing that some shows that I remember the most only run a couple of years. Gilligans Island only run for 3 years. The Monsters (only 2 years). Knight Rider (only 4 years).
I am waiting for the last 2 seasons of The Cobsy Show to be show up in the mailbox. The kids really love that show.