Spycraft raises the dead! Spycraft keeps the sun from falling!
Sorry.
As you can tell, the people who love Spycraft really love Spycraft. And from what I've seen, it does one thing (spies!) really, really well. Personally, I'm waiting for d20 Modern, which will do several things pretty well.
(Well, there's that and the fact that I find the Spycraft departments-as-races thing unbelievably goofy.)