I just returned from the Austin City Limits Music festival and had the chance to see the Indigo Girls live on Sat. night. I think their concert was the best of the weekend, every song sounded great, with pristine harmonies. Emily Saliers is becoming quite an accomplished guitarist on both acoustic and electric.
On their website they post some free podcasts of themselves and guest artists just jamming and talking. Here's a link to the podcast site. The podcast with Girlyman has a nice version of "Pendulum Swinger" from their latest album "Despite Our Differences". Also nice is the podcast with Brandi Carlile doing a cover of the Dylan classic "Don't Think Twice Its All Right".