I use Neutrogena Norwegian Hand Formula. It really sinks right in, you can feel an immediate difference, and (most importantly for me) it doesn't feel greasy AT ALL. Love it.
I have gone through many handcreams and now I use Aveeno Intensive Relief Hand Cream. It absorbs quickly and feels great. I think you can buy it at most drug stores.
My current fave is Vaseline Advanced Healing, or the CVS copy.
It seems to work better than others I have tried, and the interesting thing, it says fragrance free, but on me, anyway, it has a very subtle, light fresh scent!