1. What Australian city is home to the iconic Harbour Bridge as well as Jørn Utzon’s famous opera house?

2. What destructive Labrador retriever is the subject of John Grogan’s 2005 memoir about “life and love with the world’s worst dog”?

3. What’s the name for one of the dots on dominoes and dice?

4. Who had an unlikely hit in 1968 with his ukulele cover of “Tiptoe Through the Tulips”?

5. What onetime fiancé of model Claudia Schiffer was the first living magician to earn a star on the Hollywood Walk of Fame?

What’s the "Kennection" between all five answers?