With Princess Di, he was probably looking to find out who she was doing, for gossip's sake, and perhaps for future reference in case he ever wanted to dump the witch and start an Anglo-US leftist alliance.
I don't remember Clinton announcing Bob Hope had died. I remember it was announced in Congress, but not by Clinton.
Or jus' for some good ol fashioned phone sex via NSA eavesdropping- since the Clintons used every other national asset as their personal possession