Netflix is offering a pretty good documentary on the life and times of Janis Joplin called Janis: Little Girl Blue (2015). We watched it last night. She was never my idol nor my favorite -- but the treatment of her is very even-handed. Much like the Jimi Hendrix documentary I mentioned here, the inclusion of family letters (narrated by Cat Power) shows that there was much more than just another wastrel behind her persona. But her demons and sensitivities got the best of her, and all of her surviving family, friends, lovers and colleagues still grieve.
[added] Dad Bones links what would have been the perfect video to use in this post: