Part social activist, part guitar god, Tom Morello is one of rock's most interesting figures. The Rage Against the Machine guitarist has unplugged, gone solo and donned a new guise he's calling The Nightwatchman. Tune in to hear his interview with Jim and Greg and his modern take on protest music.

Record producer and writer Joe Boyd, the man behind the sounds of Pink Floyd,Nick Drake and Fairport Convention, visits the show this week. And, tune in to hear Jim and Greg review of the latest release from Omaha emo rockers Bright Eyes and ponder the strange pop phenomenon known as "Sanjaya."

Soul legend Booker T. Jones of Booker T and the MG's is this week's guest on Sound Opinions. Tune in to hear Jim and Greg talk to the man behind the famous Stax Records sound in an interview taped live at this year's SXSW Music Conference. Then, hear their takes on the latest releases from Nine Inch Nails and Kings of Leon.

One of rock's greatest voices belongs to none other than Neko Case, this week's guest on Sound Opinions. The singer/songwriter takes a break from her recent tour to talk with Jim and Greg and perform some of her signature country-soul songs. Then stay tuned for a review of the new solo album from famed hitmaker Timbaland.

This week Jim and Greg enter into the psychedelic world of Elephant Six. This musical collective had humble beginnings in a small town in rural Louisiana, but has gone on to produce some of the most innovative pop and rock music ever. Jim and Greg will highlight some of their favorite songs from bands like Neutral Milk Hotel and Olivia Tremor Control, and talk with Elephant Six founder and Apples in Stereo front man Robert Schneider.