Multiple domains, content URLs, themes, one instance

Hi guys,

I see that MU hosts multiple sites, but I’m not sure if it does exactly what I need. Do you know if I should use it to do the following, or are there other ways?

1. Have one blog instance live on two domains
2. Have different templates for both domains
3. Some content lives on one domain, other content is shared and should live on both domains

Thanks!