The writing was actually very good in the first couple of seasons, decent in the thrid, then semi-nonsensical once Jerry O'Connell (Quinn) left the show.
A few of the good ones
- the episode where Quinn teaches a younger version of himself about standing up to a bully
- some of the Kromags episodes, including the "slide cage" prison
- The end-of-the-world episodes that introduced Kari Wuhrer's character
- the "Species" rip-off where Kari Wuhrer was looking very nice

(sorry no
pics)
Not as consistent as Stargate (after SG1's weak first season), but some good and imaginative stories.
Hmmm, I wonder if Sci Fi is still showing it in some out-of-the-way time slot?