If the guys in Metallica were ever going to break out a cover of "Sweet Home Alabama" by Lynyrd Skynyrd, their first show in Birmingham, Alabama in 27 years was the time.
It came during Kirk Hammett and Robert Trujillo's "Doodle" segment of the show, where they usually do some song that relates to the city where they're performing. What made this cover special is that James Hetfield stuck around to do some vocals.