I would hate for others not to want to watch the series because they only think that the first two seasons are the only good ones. True it does start to lose some spark in the middle of the 4th season but I think that was more the network's problem than anything else.
Dean Cain and Teri Hatcher had incredible chemistry throughout the whole series. Dean's portrayal of Clark/Superman is the best as far as I'm concerned. Even though Superman was a superhero he never felt he was above anyone. Clark even came across as a hero in his own right. He was incredibly sweet and romantic, not to mention yummy on a stick.
With a terrific supporting cast, this show is the perfect "chick" series.
People have commented on the fact that they shouldn't have gotten Lois and Clark together when they did, but most of the fans were angry at the network for keeping them apart as long as they did. This was pretty evident when the ratings started dropping during the clone/amnesia/New Krypton arc (which I really liked--there I admit it).
This is a wonderful fantasy-romance-action series that still holds its own 10 years after it left the network.