Thought I'd take a look at the other side of the aisle. Given Tennessee's trend towards the Republicans, here's a GOP gerrymander of the state (I used the Ford/Corker numbers from 2006 as a 50/50 baseline for federal elections) intending a 6-3 Republican map. I thought this might be an interesting exercise, to consider what 2012 may look like in states that are not going our way.
TN-01 (blue, Phil Roe - R) - Didn't change this one much, just reconfigured it to give some of its territory to the Democrats. still uber-safe Republican.
TN-02 (green, John Duncan - R) - Stretches west to take in some Democratic counties from TN-04 and TN-06, but the population remains centered in Knoxville. Will shift the margins for the Republican candidate from the 70s to the 60s, but still a safe seat.
TN-03 (purple, currently open R) - Also stretches out to take some Democratic territory from TN-06, but should remain Republican.
TN-04 (red, Lincoln Davis - D) - Screwed over Lincoln by chopping out most of his district and adding in parts of TN-01 and TN-06. A strong Republican should flip this seat.
TN-05 (yellow, Jim Cooper - D) - One of the two safe Dem seats on the map. Metro Nashville and Robertson County. 58-42 Obama.
TN-06 (teal, Bart Gordon - D) - Again, removed most of the existing district (only three counties of the old TN-06 remain) and added in some Republican territory in the south of the state. As with Lincoln, would probably flip with a strong Republican candidate.
TN-07 (grey, Marsha Blackburn - R) - Didn't change too much, but it did take in a couple Democratic counties. Still safe R though.
TN-08 (light purple, John Tanner - D) - All the most Democratic parts of western Tennessee that aren't Memphis. Tanner should be able to hold it easily, although an open seat might be more interesting.
TN-09 (light blue, Steve Cohen - D) - Memphis! 64% black! 80-20 margins for Democrats!