On the subject of Big Star, words pretty much fail me.
But I think it's safe to say that if there's any band that sums up the mission statement of the blog you're reading at the moment, it's Alex Chilton and company.
Here's their ineffingly poignant "Ballad of El Goodo" in very serviceable amateur video footage from a 1993 reunion show.
That's two of the Posies along with Alex and original drummer Jody Stephens, and yes, this is from the same show immortalized on the "Columbia" live album.
BTW: There's a really good version of "Out on the Street" from the Leno Tonight Show a few months later somewhere; here's hoping somebody will YouTube it at some point.