There are a whole lot to choose from. From the minor demigods to the greater deities. Some races have their own entire pantheon.
My top 3: 1. Torm - Seek out evil and kill, and I guess I envy Keldorn and his loyal attitude 2. Tymora - It's all about dice rolling, and getting a little but of luck from her is always nice 3. Bhaal - for his genius foresight of his death and the plot to be ressurected