The templates are great...but I do see the potential for misuse that I'd like to chime in on.  In general, I would say that jquery javascript templates should really only be used for the display of dynamic, non-SEO relevant data, since search engines do not parse javascript.

I see the temptation, especially in DNN, to rely on client side templating for more than just this type of dynamic data display.  For instance, you would not want to use javascript templating on something like Forum posts, or comments on a blog (such as this)...since that is unique and relevant content that has great SEO value.

Just my 2 cents worth. :)