Yes it can be done with a plugin. *Are you interested in having it look more like the tv guide or search guide?
If it is search guide I can modify my fast find plugin that I am working on to do this. *It would be fairly straight forward.
Instead of the letter list box, you would have channels.
The only thing you would have to change would be loading the shows based on channel (easy) and show channels in the list box (easy).
I posted a screen *shot of my find fast plugin.
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