Merlin's End

I've been watching the BBC's Merlin on and off, mostly on the grounds that it is Arthuriana and quite pretty.   The plots and characterisation seemed to get in a bit of a tangle from time to time, and sometimes you could only conclude that Monty Python was right about Camelot being a very silly place, but on the whole I enjoyed it.  
( Full o' spoilers.  )