Re: Easily remembered...
Company records, directors' names. If there's a director called Roger Bellend, try "rbellend", "roger.bellend" and "roger.bellend@company.com" (the last only if they're a bit techy and hate their users enough to make 'em type that sht).
Right. Usernames are easy. A favorite is to dress up for an interview, walk around an office, and look for PCs with a Post-It note with the password. The username is also indicated in the form of a "name plate" on the cubicle.