David Cook Pictures
Jason Castro Pictures
SYTYCD Screencaps
more coming.

includes: Jason's dorky dancing (air drums & a SHIMMY :P), MJ and DC dancing like idiots with Jason, and... I'm not sure what Cook does to Jason.
I'll leave that to you guys to decipher. (or just come up with something entertaining)

so... I'm planning on making icons of David's journey through AI. (Top 24 --> Finale)
also, I made a David Cook mood theme, which I will post once I get off my lazy butt and upload it.

for now, though, you get a wallpaper and a few icons.
examples:
   

David Cook icons:

1-5 : David Cook
6-22 : Jason Castro
23-37 : Cookstro