for a long time (even when the show originally aired) I used to avoid these (especially the post-Radar ones because I considered them to be "oh, we're doctors and we're nurse, and we're so good cause we save lives...and death is such a bummer and war is hell...and this and that" but lately I've been watching them on ME-TV and they're not so bad.
I mean, they do tend to get overly dramatic at times and there's scenes in a few episodes I could do without; but overall those later episodes aren't bad.

(I still say though that Margaret's bleached-blond hair and bangs in the last season looks ridiculous)