Coyote Forte is a sample player optimized for ultra high-quality emulation of grand pianos! Armed with this, a Midi keyboard and a file of piano samples (available from many sources) you can play what sounds just like a grand piano, with all the nuances of dynamics, expression, pedal operation, and a whopping 160 voices of polyphony. Of course it plays other instruments as well (in fact, any instrument you have a compatible sample file of) but piano emulation is where it really shines.
Good Points
Huge polyphony, ability to play the most common high-realism sample file format (gig format), good simulation of pedal resonance even if the sample file has none. Good reverb.