10/4/2004: You must show the card you bring out of the graveyard to your opponent.
10/4/2004: The creature being brought back is chosen on announcement and not on resolution of the spell because it is targeted.
4/1/2008: A "creature card" is any card with the type Creature, even if it has other types such as Artifact, Enchantment, or Land. Older cards of type Summon are also Creature cards.