Copacetic

Blacknight provide an Irish ISP speed test for broadband users. Its pretty good in terms of user interface (requires Java as it’s an applet).
What I’d really like to see (and blacknight may provide this, I just haven’t found it yet) is a comparison across vendors and exchanges so that you can see how fast you are at home and in work and also compare your speed with neighbours, friends, colleagues etc. Then we could really see how the different broadband vendors compare in the trenches as opposed to on the marketing brochures.