Original version was first recorded in 1939 by The Blue Pine Brothers and short afterwards a new version was recorded by The Rice Brothers Gang. In 1940 Jimmie Davis recorded his own version and got the copyrights for the song.
Since then it was covered by many, including Ray Charles:
Johhny Cash and June Carter:
Aretha Franklin (pretty good!):
And this wonderful Leftover Cuties version:
But the greatest of them all must be that of a hologram falling inlove with a borg 
(Jeri Ryan and Robert Picardo)