3. Kylie Minouge – “Voyage of the Damned”
American music fans would most probably know Kylie Minogue as a pop star. However, Doctor Who fans will recall her as Astrid Peth. She was a waitress on an intergalactic copy of the Titanic. Astrid and David Tennant’s Doctor had somewhat of a chemistry until disaster struck the poor lady.
4. Anthony Head – “School Reunion”
His role as the studious Giles in Buffy the Vampire Slayer had him all prepped up for this cameo. He depicted the role of Mr. Finch, a winged alien who disguised himself as a headmaster.