DS9: I can't currently give any opinion on Children of Time, His Way, When It Rains, You Are Cordially Invited, and The Reckoning, but I can recall the others in some fashion past season 4. Past Tense was good, but I don't think I could call it a favorite of mine.

TNG: Oh yes! all definite goodies :)

TOS: I haven't gotten to Season 3 yet, but the S1/S2 eps are good ones.

Pathfinder huh, m'kay. :)