sure, you care about it, but it's not what you do. Just like as a Unix SysAdmin, I care very deeply about power. Without good power, nothing I can do means jack. However, I know less about it than an electrician would, and (going back to Zed's comment) I wouldn't be able to name the people/companies who are famous for coming up with the high power switching technology required to keep my data center on-line.