Quote Originally Posted by Urpriest View Post
1. Monsters are just like you.
On this, specifically: don't forget that some monstrous races qualify for prestige classes with their racial features (marrulurks, for example have sneak attack and death attack). Also, monsters that have "cast as a sorcerer of x level" (like, say, a rakshasa) who continue to take sorcerer levels stack those levels for determining your full casting.