Help me fill in the blanks

Hello, over the next few months im going to build 2 pc's.  the first will be for gaming and some animation and the  Second will be for...  other things.

Anyways I kind of suck at Choosing the best parts for the job so if your still reading this "would you kindly" suggest a thing or two.  

Im focusing on the gaming pc and i have a budget of  $1000 to $1200. So far im thinking along the line of an i5 3570k for the processor and for the case im thinking a corsair 650d or something with a nice wire organization option

Intel option: