I like Spike. He's not so much 1 dimensional as he is adaptable. That's what makes him different. Before Spike became a vampire he as a love crazy poet, and he still retained some of those attributes when he did become a vampire. He's able to keep those human qualities that are somewhat difficult for most vampires to have. I guess, he stays in touch with his human side. What makes Spike great is he handles whatevers thrown at him, he adjusted quickly to the chip and when he got his soul. This is why he is so different from Angel. Angel took centuries to stop brooding after he lost his soul... so don't dog on my man Spike!