The program generates passwords which are designed to be easily memorized by humans, while being as secure as possible, and it's open source. Features include no ambiguous characters (8/B), a full mix of capitals, numbers, and tokens, and lengths varying from eight to 32 characters.
[robg adds: There's also a built-in tool in OS X, too, available from the Accounts System Preferences panel. For browser-based password creation, 1Password is highly recommended.]

