After I finished off the OC I realized there was very little replay value so I went searching for mods. Currently I'm half way through Dreamcatcher (sequel to Shadowlords) and I find it quite the lovely experience.

So I was wondering, amongst the glut of mediocre mods, are there any shining gems worth trying out?

Try the two Tales of Arterra (I think that's what it's called) modules, they're pretty good.

Well, you'll at least want to play the two official expansions. They're miles better than the OC.