If you didn't already know TG4 began broadcasting 20 years ago today. Since then it has proven itself to be the quintessential public service broadcaster. It entertains, it informs and it educates. It gave us a different view (suil eile) and it proved that Irish TV could be strong, in an era when we were bereft of strong national TV. For those of us in 2 TV land it gave us an expectation as to what TV3 should have been, and 2 years later we were slightly disappointed.