It was overkill. Jack Shafer explains here.
My two cents: Obama and Deval Patrick share the same campaign manager (David Axelrod). The expression of ideas is bound to overlap.
And I'm sorry...I bet if someone had the time to look, they would find plenty of instances where Hillary has co-opted some of Bill's comments.
Oh wait...someone did!
Give me a break, Hillary! This move reeks of desperation and, where it counted most, the voters soundly rejected it.