Not a fan of impact. Sorry, but there's just something about it. I think it's more to do with it being overused on games forum signatures or on Failpics, or Icanhazcheezeburger pictures, than the actual font itself. Either way I avoid using it
Hmm, I can see where you're coming from - I think the fact that it's on all the machines for WordArt and things like that just mean it's used not only commonly, but also in many amateurish ways, that it almost brings it down and gives it a poor stigma.