I always thought it'd be cool to own a raccoon. I love the furry little backyard bandits.
I actually looked into it once. They can be funny, entertaining pets, but they take a lot of care. They're smart though, and can understand many words and commands like, "Get out of the cabinet!"
But if you don't pay enough attention to them, they'll get revenge. These smart little dudes know what's important to you. So they'll go rip up one of your favorite pictures or break your favorite antique vase. heh.
Unfortunately, I just don't have the time to give one the supervision it would need.
Oh, I also think it'd be cool to own a fox.