I like what Honda UK has done recently with their blog 2TalkAbout. Not only do you see user generated content in blog format but you also have Honda Engineers responding to comments. 
I also really like their feedback rating system (made me think of Netflix). Seems to me that this is also a GREAT way to have a corporate blog without having to turn your entire staff of engineers/recruiters/marketers/tech staff into bloggers (since a lot of them don’t want to be bloggers or shouldn’t be bloggers anyway).
