My friend Dan D. mentioned that the new inline commenting system wasn't playing nice with NoScript. After a little looking into it I found that indeed, Blogger is using JS to render the form (why?).
To reduce the pain a little I've added a link to the old method of leaving comments which should appear in case you don't have JS enabled. If you also want to do this, edit your template as HTML (of course back it up before!), check the box to expand widget code and search for the following line:
<b:include data='post' name='comment-form'/>
After it include the following piece (of course, change the text to read whatever you want):
PS. I also added a recent comments and top commenters widget to the sidebad, courtesy of Blogger Buster.