Many thousands of hours broadcasting on radio and tv with plenty of opportunity to do so, but no nasty or snide remarks about anyone, just gentle mickey taking or funny observations on life and a way of expressing what others couldn't or wouldn't put into words. I knew someone who worked at the BBC and she told me even the most star studded "Celebrities" knew they wouldn't cast their auras over Sir Terry, so not to try, but all left smiling and happy with their self esteem intact after one of his interviews.
Sleep well, you'll be missed..