What is a good way to display the time in multiple time zones in Windows?

If you have Vista (or Windows 7), the built-in clock widget allows you to set a different time zone per instance, and give it a name. So, for example, you could set an instance to Sydney time, and name it "Sydney", and it will show the name on the clock itself.

I've always liked the Kybtec World Clock. It's very customizable.

If you don't mind installing Yahoo Widgets (formerly Konfabulator) then this widget looks pretty sexy:

Windows 7 allows you to add additional clocks to the Date and Time display on the Taskbar.

"Someone pointed me in the direction of NovaClock.

It looks nice, is very customisable and can show multiple time zones.

Unfortunately, on my laptop it crashes whenever I try to load one of my saved customisations. However, I thought I'd post it as this may be useful to someone else."