I was going to say that Springwatch is reality TV done right, and go on at some length over why watching Simon King dig through a cowpat is more interesting than watching Big Brother contestants being racially abused. Aggravatingly the Independent had beaten me to it, so here's the link to their article Natural celebrities: The true stars of reality TV.
(Last year, one family of Great Tits, which had a nest like Kate Humble's hair, were named "the Humble family". Watching Bill Oddie concentrating on not saying "And now we're going to take a look at the Humble Tits" is what Television was made for. In my opinion.)