Here are some tea-related video channels. If you have anything to add, feel free to leave a note in the comments. If you have a tea-related podcast or you know of one, feel free to add it as well and we'll include it in the list.
Seven Cups (Videocasts)
Seven Cups (YouTube)
Tea Guy Speaks
Walker Tea Review
Cuisinart TEA-100 PerfecTemp Programmable Tea Steeper