Sometimes, there are things in my blog posts that just don't fit nicely into the width of the content area. This is a problem with code snippets and images in particular; I only have a certain amount of horizontal space, but often that's not enough.
Inspired by a solution I witnessed in action at Lullabot.com (and the place Lullabot discovered it, Viget.com) I finally decided to solve this problem using some fancy jQuery. Now, all code blocks on this site fit correctly into the content area, with any excess text hidden until your mouse hovers over the code block. All images are automatically shrunk, until your mouse hovers over them, at which point they will enlarge to their original size. Pretty sweet! And it's all cross-browser-compatible.