@font-your-face provides an administrative interface for browsing and applying web fonts (using CSS @font-face, supported in all popular browsers) from a variety of sources.
Upgrades the version of jQuery that comes with Drupal core to a newer version of jQuery.
Tagadelic provides an API and a few simple turnkey modules that allow you to easily create tagclouds, weighted lists and search-clouds.
You can build a module with a few lines of PHP to turn a data that can be counted into a weighted cloud.
Needs a new maintainer to complete the D7 version.