Just a couple: "Please leave the weather forecast at the tone. " "Do you remember why you called me? Tell me now. " "Cast your vote for America's got Talent! "
You could use the opening lines from Pink Floyd's "Comfortably Numb" "Hello, is there anybody in there? Just nod if you can hear me. Is there anyone home. "
You could play the Weazer song "Say it ain't so". Just play the line "Say it ain't so". Then come on and say "I'm sorry but it is so. I'm not home right now". Then continue with your message. This is fun and people appreciate it.
