Slingbox (or alternatives), see:
http://en.wikipedia.org/wiki/Slingbox
I have no personal experience of the Slingbox or any alternatives so do not take this as a recommendation. Also take due account of the amount of data you would be producing: if your broadband account at home has limits on the amount of data this could cause problems.
Other alternatives are to use services like BBC iPlayer. If your broadband is not in the UK you would need to get a UK proxy server.
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