|On January 4, 2015, I will be shutting down the server that hosts The TV IV website. It has been a very long time since I've been able to put any decent amount of time into the site, and ad revenue is plummeting. I think it is time to shut it down or hand it off to someone who can keep it going properly. If you are interested in taking over the site's code and data, contact administrators at tviv.org. --CygnusTMtalk|
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A crossover episode is an episode that has a story start on one series, and then finishes on another series. It may also refer to an episode where a character from another series appears, often to cross-promote two programs on the same network or produced by the same company. The hope is to make fans of two, often similar, shows by attracting fans from both shows.