5. This is Spinal Tap Does for rock and roll what The Sound Of Music did for hills."
Quite simply the funniest tagline there is to go with arguably the funniest movies of all time too. Perfectly in tune with the clever-but-silly humour found throughout the film itself, you could just imagine David St Hubbins or Nigel Tufnel trotting this little gem out themselves. You hear all sorts of stories about people who watched Spinal Tap and didn't realise it wasn't a documentary and it never fails to amaze me that someone could watch 'Stonehenge' and not click right away that it's a spoof. Surely however one glance at this tagline and the penny would drop. Just remember, dozens of people spontaneously combust each year. It's just not really widely reported.