[Humbug]

Willie Nelson (with Merle Haggard) - Pancho and Lefty
George Jones - He Stopped Loving Her Today
Charlie Daniels - The Devil Went Down to Georgia
Charlie Pride - Kaw-Liga
The Highwaymen - The Highwayman
Roy Clark - I Never Picked Cotton
Clay Walker - Chain of Love
Daryle Singletary - I Let Her Lie
Walter Brennan - Old Rivers

Honorable mention (ahem)....
Leonard Nimoy - Ballad of Bilbo Baggins

[Sir Francis Dashwood]

Doug Kershaw - Diggy Liggy Lo

http://www.youtube.com/watch?v=9AQvUPN1jAk

[Humbug]

Some more from me...

Irish:
Wolfe Tones - The Merman
Wolfe Tones - The Foggy Dew

Country:
Bryan White - Rebecca Lynn
George Strait - Check Yes or No
Sara Evans - Suds in the Bucket