The best time to do this sort of thing is late Sunday night or early Monday morning :-). My default categories with post count looked a little outdated, so added weighted categories to the sidebar. The configurations are simple and are outlined here. If you are using the MistyLook theme, you need to edit sidebar.php rather than archives.php. Here are my settings in sidebar.php
$minfont = 7;
$maxfont = 20;
$fontunit = "pt";
$category_ids_to_exclude = "";
weighted_categories($minfont, $maxfont, $fontunit, $category_ids_to _exclude);
Also, shuffled the contents of my sidebar a bit.