Sadly TimeandDate.com does not have a mobile website. On the other hand it does not look terrible on a BlackBerry and I find it to be an extremely useful bookmark. It won’t compare to having a full world clock application on your BlackBerry but it is free. You just need to remember that the time on the right or on the next line from the city.
Otherwise check out www.timeanddate.com/worldclock/ from your BlackBerry and let me know what you think.
Thanks to Luc for pointing out TimeandDate to me a bit back!