Exploratory spectrum calculations using overlap valence quarks on a   staggered sea
  We present exploratory results for the hadron mass spectrum and pseudoscalar meson decay constants using mixed actions. We use improved staggered sea quarks and HYP-smeared overlap valence quarks. We obtain good signals on 10 configurations at one lattice spacing and two different sets of sea quark masses. 
UKQCD Collaboration, K.C. Bowler, B. Jo\'o, R.D. Kenway, C.M. Maynard,   R.J. Tweedie