Thankful is a big deal, especially on a day like today. A day reserved especially for giving thanks. Who to give thanks to, well, I guess that's up to you, but for me, I have a lot to give thanks for, and it all goes primarily to my God and Father.
In no particular order, here's a list of what I'm thankful for:
BLT sandwiches, and dads who make them for you when he was only planning on making one for himself.
Friends who are awesome.
Breathing. This is good for living.
Family, that while they are crazy, make things interesting.
College, that has taught me a ton.
Good music that inspires me and makes me feel like laughing, crying, dancing, and sitting still all at the same time.
Food. The end.
Grace. In the form of a sister. Especially when I need it.
And definitely for my Savior. Because He died for me. Because everything I have comes from Him.
I'm thankful, basically, for the life that I have. It's strange to think of a different life. It's easy and probably very true to say that if God had put me in a different life with different parents, I wouldn't be what I am today. I've told people that if my parents had been any less caring and nosy about my life, I probably would have gotten seriously messed up with my relationships and possibly ruined myself first year of college. Because of God's care for me, every single thing that has happened in my life has been for my good, even though some of them have not seemed good in the end. Today it is easy to say "God is good." Tomorrow it might not be as easy, but it definitely still applies. God is good.
My challenge to you is this: How is God good in your life?
 I'm also thankful for KB and spleens. [/edit]