Reese Witherspoon and Joaquin Phoenix were both so nervous about having to sing that it caused tension in their relationship off screen. Both actors admitted in interviews that they didn't get along and constantly argued during the six months of singing lessons prior to filming. It wasn't until filming started that they connected and became friends.
Johnny Cash and June Carter Cash's actual home, in Hendersonville TN, appears in the movie. It burned to the ground on April 10, 2007 while under renovation by its new owner, Barry Gibb, of The Bee Gees.
When Johnny is hanging pictures, he begins to put a nail in the wall just above a line in the wood. In the very next shot, he bangs a nail several inches higher.
While riding in the tour caravan, Johnny, June, and Jerry Lee hear an ad on the radio for a 1957 Chevrolet. At the next gig, banners in the auditorium read "Class of 1955".
Record Company Executive: Your fans are church folk, Johnny. Christians. They don't wanna hear you singing to a bunch of murderers and rapists, tryin' to cheer 'em up.
What are the differences between the theatrical version and the Extended Cut of Walk the Line?
A
About two years after its first home DVD release, Fox Home Entertainment published an Exended Cut of Walk the Line that runs more than 15 minutes longer. Most of the new scenes can be found on the old DVD as deleted scenes but there are also some really new scenes but of course it's questionable whether this new Extended Cut is worth a double-dip. Maybe this detailed comaprison with pictures can help you with the decision. You can find it here.