I recently had a very nice chat about SharePoint with Linda Tucci of SearchCIO. Linda has been tracking MOSS for some time now, so we were able to get into a bit more nitty-gritty than usual. An excerpt:

"There are certain areas at the enterprise level, for example around backup and performance and archiving, where I would encourage bringing another vendor into the mix, despite the risks..."

In our new SharePoint Report 2009 we evaluate twenty SharePoint partner solutions, because so many customers were telling us they were going the 3rd-party route for add-on modules, and they weren't totally comfortable with it.