If you're hunting covers, try the Coverville podcast. The creator and still host describes it as: "The show features a combination of music and information about the music, delivered in a very relaxed, informal style. On average, each show runs about 90 minutes. Information about the performing artist, and source album is provided, along with information about the artist being covered."
The most recent episodes are:
1308: They Might Be Giants Cover Story II
1307: The 50th Anniversary of Let It Be
1306: This Day in Covers: 1980
1305: Tribute to John Prine and Ritchie Blackmore Cover Story
1304: Tributes to Fountains of Wayne & Bill Withers
1303: Eric Clapton Cover Story