Dragonforce is quite.. catchy, I always get their songs (and solos) on my mind. And they won't go away! Not a big fan though, but I do listen to their music.
I listen to it once in while, but i think that theres a lot of better power metal bands out there. Or well they call their genre extreme power metal.
They have writte some catchy songs but in the end it just gets to "cheesy" to my taste.