When Macs error, you get a screenful of corrupted code.
But nice.
It depends of the magnitude of the crash. Usually, when Macs crashed on me, it was either a General Error, or it said "Le programme a quitté inopinément" (can't say it in english, I never saw the error in that language and I highly doubt that they even use an equivalent).
We got an ugly console error once. But I think it's because the Mac has been victim of violence (not from me, don't worry. The only computer I remember hitting on, is my old 486. Heck, it survived even that) of some sort... I don't know...