I started following TNG right around Unification, but I didn't really watch every week. I got hardcore into TNG after I saw All Good Things in 1994... I would watch the repeats in syndication. And now of course I love it. Because of how the station I watched it on ran syndication I have seen Seasons 3,4 and 5 far more then the others, so I am a bit biased towards these seasons but I have branched out since then.
Favorite Episode of Each Season...
Season 1 - The Neutral Zone
Season 2 - The Measure Of A Man
Season 3 - Yesterday's Enterprise
Season 4 - Future Imperfect
Season 5 - The Inner Light
Season 6 - Chain Of Command (Pt. 1 & 2)
Season 7 - All Good Things