Here are the very best episodes of Star Trek The Next Generations:

1×18 Home Soil
1×21 The Arsenal of Freedom
1×22 Symbiosis
1×26 The Neutral Zone

2×09 The Measure of a Man
2×13 Time Squared
2×16 Q WHo
2×21 Peak Performance

3×04 Who watches the watchers
3×10 The defector
3×13 Deja Q
3×14 A matter of perspective
3×18 Allegiance
3×26 The best of both worlds (part 1)

4×01 The best of both worlds (part 2)
4×03 Brothers
4×11 Data’s Day
4×14 Clues
4×15 First Contact
4×19 The Nth Degree
4×21 The Drumhead
4×22 Half a Life

5×07 Unification (part 1)
5×08 Unification (part 2)
5×18 Cause and effect
5×23 I Borg
5×24 The Next Phase
5×25 The Inner Light

6×04 Relics
6×09 The quality of Life
6×10 Chain Of command (part 1)
6×11 Chain Of command (part 2)
6×15 Tapestry
6×25 Timescape

7×04 Gambit (part 1)
7×05 Gambit (part 2)
7×11 Parallels
7×12 The Pegasus
7×19 Genesis
7×25 All Good Things