Just an update. I went with the Kasier Baas HDHomerun (now called Network TV Tuner). I paid $140 at JB Hi Fi and thought 'you beaut, go home and hook up, no worries...." However unlike the standard PC that has Windows media centre built in which is the in built program for picking up TV reception, Apple products require you to part with another $70 or so of your hard earned to download the appropriate software called EyeTV 3 to your Mac. However after cleaning out my wallet, I now have TV on my iMac and also wirelessly on the iPad. Which means I can now watch the Olympics in bed!!!!
It would be good if Apple looked at this, as it is a pain in the neck to not only buy the hardware to get TV on your computer, but also have to pay for and download software as well. Surprised some smarty hasn't made a cheaper software version to use. Knowing Apple though, they are always content for you to have their product, as long as you use it the way they want you to.
Paul