i didn't see the historic house programs so i cannot comment on
specifics... however i can't help being reminded of his days with the pbs
program 'this old house'. it has long been a part of our family humor to
comment when he touches everything - for those with keen memories, he has
always done this. in 'this old house' he was constantly touching stuff.

on a more serious note, i do agree that museum staff should be more
observant in such situations and remind visitors not to handle objects, no
matter who they are. unnecessary handling should be stressed even among
staff who might have a legitimate need to handle objects. (all within
reason, mind you)