True. Points for you WhiteWolf (Also, great Christmas themed Avatar).
Since that took nearly no time, here's two to set your brains on. The first will be number 1, the second number 2.
1) I am always hungry and will die if not fed constantly. To some I am a luxury, to others a danger. Don't come to close, for all that I touch I consume. What am I?
[And because I absolutely adore these older ones...]
2) This thing, all things devours. Birds, beasts, trees, flowers. Gnaws iron, bites steel, grinds stones to meal, slays King, ruins town, and brings tall mountains down. What is it?