Does anyone else find that sites based around a CMS always tend to look very similar?

I was just thinking about this recently when looking at several sites based around CMSs such as Joomla and PHP-Nuke, and then comparing them to sites that use the more old fashioned method of using HTML etc.

I think CMSs are really good because they offer lots of useful features, but regardless of the content of the site, or the colour scheme or other graphics, I find they often all look very similar, while sites that don't use a CMS tend to look alot more unique.