Too true, Jack Webb talking his way through "Try A Little Tenderness" is hilarious.   Why am I imagining his doleful partner Bill Gannon, sitting in the recording booth and just nodding?
Here is another treasure - Pat Boone massacring heavy metal classics: 
Pat Boone: In a Metal Mood Never thought heavy metal music could sound like lounge jazz.  Check out "Smoke On The Water".  And what he did to "Enter Sandman" is even more unspeakable.