These are all pretty bad episodes. One makes Kim look really bad, one is just a useless second part of a useless story, one just unceremoniously kills off a recurring character, and one just was useless waste of possible potential in explaining an out of the blue relationship occuring in the finale.
I'll save "WORKFORCE, PART II". At least it had some good directing work by Roxann Dawson.
"NIGHTINGALE"
"FRIENDSHIP ONE"
"NATURAL LAW"