Wow, have to vehemently agree to disagree there. Overall, I think DS9 is better than TNG, but TNG easily has at least a dozen really good to great episodes IMO.
Just off the top of my head -
Measure of A Man
Darmok
Inner Light
Sins of the Father
Best of Both Worlds
I, Borg
Tapestry
Conundrum
Cause and Effect
I can think of several more in my head, but I don't know their titles. Many people love Yesterday's Enterprise also, but I think it's just good. The first three I listed are simply brilliant IMO.