Since I've switched to my new Dell XPS M1710 laptop, I've been trying to find good Windows-style ways of doing what I'm used to doing with Ubuntu. One of my favorite *nix one-liners is `du -k | sort -r -n | less` to list the contents of the current directory by size - it's an easy way to figure out what's taking up space in a given directory or filesystem.
There's tons of software in the Windows world that does this, but most of it is shareware or commercial-ware, which is fine, but I don't plan on spending money for something that two tiny shell utilities can manage to do. Then I came upon TreeSize Free from JAM Software - Windows Freeware, which does exactly what I need - show which directories are eating up the most space - and is free. Works fine with my Windows XP install, it takes a little while to chew through the directory tree on my C: drive, but I'd expect that.