Really really want to roll up a grave cleric, lots of tables that look like they'd be helpful DMing. ( )

This is a great expansion to the game. My favorite parts of the book are the charts. The character background section mentions that none of it has to be set in stone, but it's a great tool to quickly get ideas for your character and generate a backstory. You can also roll their names and some stuff to connect them to their class.
The racial feats and spells are nice. Most of the subclasses look pretty cool, especially as different specific RP character concepts. Only a few don't look as great mechanically as the ones on the Player's Handbook (though it definitely added better subclasses for some, especially Ranger). The DM's tools look interesting and useful. It looks like it specifies some things from the other books (though I've never DMed or read DM's book).
Basically this book expands player options and is useful for creating more well-rounded characters. ( )

I absolutely loved this book ( )