I've never seen it and was looking for a box set me and dd could watch together. It's a toss up between this and Northern Exposure (which I have seen but ages ago). I've never seen six feet under but hear it's good.
First season is rated 15 and following seasons are 18. Google suggests mainly due to nudity and homosexual relations......neither of which im bothered about her seeing as long as it's not majorly explicit sex scenes (either gay or straight). She can handle a glimpse of boobs and more im sure. Ditto the idea of gay relationships.