I've updated the column widths on the blog template (finally!) to fix the annoying clipping of wide-format videos (typically YouTube vids). I think the wider columns also enhance text readability a little.
Why did it take me so long to fix this? Well, the previous version of Firefox 3.5.x simply placed oversized videos into the sidebar area, so they were still fully viewable, even if the sidebar got obscured temporarily (until new posts pushed the offending videos down); the current version of Firefox (v3.6) seems to truncate the video if it's too wide. So the wider columns fix this -- no more truncated videos!
Obviously, this shouldn't affect those readers who use RSS readers like Google Reader to read the posts. If any readers have problems with the new format, however, let me know either via a comment to this post, or via the email address on the (now unobscured) sidebar.