XM is airing every episode of Tom Petty's show, "Tom Petty's Buried Treasure," as part of a weekend-long marathon entitled "Highway Companion Big Weekend." The special kicks off this Friday, December 15th at 12-midnight ET on XM Live (ch 200).

"Highway Companion Big Weekend" (which borrows its namesake from Petty’s Grammy-nominated album, Highway Companion) will feature rare recordings and previously unreleased live tracks from Tom Petty's archives along with the first 44 episodes his XM show.

Petty’s free-form playlist features cuts by artists from Jimi Hendrix to Carl Perkins, the White Stripes to Little Richard, Elmore James to the Beatles, Bob Dylan to Jerry Lee Lewis. "Tom Petty’s Buried Treasure" debuted on XM in December 2004 and airs on Mondays at 10am ET on Deep Tracks (ch 40) with replays throughout the week.