Hmmm... did you cause the crack? If it cracked on its own for some reason I think the extended warranty "should" cover it... but good luck convincing Best Buy of this.
I am afraid even if you could replace the display it will cost more than buying a new Pilot.
Dana
Best Buy is very picky on their returns and warranty's. They won't accept anything with physical damage.
And yeah, the screen would be expensive if you could even find it, and then you'd have to take your pilot apart and risk even more damage. I don't think there's much you can do.