Yesturday was one of the worst days for me this year. I felt like I was getting the flu and basically slept most of the day. When I was awake for a few hours (and didn't have a blistering headache), I was able to get some play time with Crisis Core and it took me a while to get used to the battle system, but I love it. The game is one of the best games right now on the PSP IMO and it has that feeling that you are back in the world of Final Fantasy VII that tugs on your nostalgic heart strings.
It kind of makes me want to replay Final Fantasy VII when I finish this game.