If you're a true Pearl Jam fan, then you NEED this album - it's awesome. I own all of PJ's studio albums, as well as the live DVD 'Touring Band' and Live At Benaroya Hall was a necessary addition to the collection. It's a real 'warts an all' performance (in a good way...), the highlight of which is the impromptu sing-a-long to Black.
This is already one of my favourie albums and if you are going to buy it, I recommend doubling up and going for 'Lost Dogs' too - a fantastic album of rarities and b-sides!