Anyway. I should be happier to see them, as apparently they eat mosquitoes - which is good! They are of the Odonata order, and "the suborder Epiprocta or, in the strict sense, the infraorder Anisoptera" (from Wikipedia).
I still don't find them particularly attractive - most insects are kind of alien and creepy to me - but the intricacy of their design is still quite fascinating.
In terms of identifying the dragonfly, I don't know what kind it is - but it does look similar to the Yellow Winged Darter, or Sympetrum flaveolum.