As a reported yesterday, TNA iMPACT! Wrestling has launched a paid YouTube channel, "TNA Wrestling Plus", for a subscription fee of $4.99 per month. The company has added several pay-per-view events as well as superstar & compilation DVDs to the channel.
There is a free 14-day trial with every subscription to "TNA Wrestling Plus", so you will have time to se if the service is worth it to you or not.
UFC and numerous other companies are doing the same thing as TNA with paid YouTube.com channels.