I was discussing this list with my wife yesterday - from the other comments we've watched more than the average person here. I'd say we've seen 4 out of every 5 shows at least one season and probably finished about 20% of them (with minor exceptions like spin offs or movies or new seasons in the last few years with a hiatus).

What struck me was the inclusion of Suvivor and Ru Paul - I don't doubt their cultural impact and significance, nor their importance towards their fans - but as a mark of quality of what a TV experience can be, considering performances, risk-taking, writing depth, cinematography, music, costuming, editing, props design, imagination and ingenuity - I wouldn't have included those in the Top 100.