TNG: The Roddenberry ones are not my favorite. The lighting was poor (smile, Jordi, so we can see you!) and the drama was just overblown and weak. When Gene died and Rick Berman took over, the lighting, camera angles and action improved greatly.
I liked all the Q episodes (especially the ones in Voyager). Plus the ones with Nimoy (Unification?)
"The First Duty" where they investigate the Starfleet Academy Team's crash was good. As was the one with Kelsey Grammar (333s, etc)...when they are stuck in a time loop. (Cause & Effect)
"The Game" with Ashley Judd gave us some nice eye candy for once

Tasha was good riddance for me too. She banged an Android. Yay her. Then a black sludge killed her. Wow.
The last episode (All Good Things) was well done.
Season 5-7 were my favorites.
Worst...when Wil breaks some lame law on the planet of the 'overtly gay people who wear tissue paper'.