I am always curious how TV channels overlapped in terms of similar "themed" shows. I looked at all the shows currently (2010) on for three of my favorite channels (Food Network, Science Channel, and Travel Channel) and mapped the number of what I considered "unique" and "overlapping" shows into a venn-diagram.
The most overlap was between the Food Network and the Travel Channel...probably because traveling and culture are so tightly linked with food. The Food Network also has the most shows, probably an indication of its willingness to explore with different themed shows and ideas.
