I've just bought my travel insurance for my trip to Paris, and I must say that I am extremly impressed with the site I used.
www.insureandgo.com
It's a very nice site to use, although it doesn't work quite right on Firefox, which is annoying, but forgiveable.
Within the space of 10 minutes I'd got a quote, paid for, and received my travel insurance. It seems as though the internet is running like clockwork for me today...