If your interested in real time Web Analytics you should do yourself a favour and check out both of these.
The second is Clicky, a pay for service that looks very polished and even lets you analyse Twitter traffic. Although apparently written for bloggers, it excels at good old pure web statistics too. I really like the way it lets you filter data on just about anything as well as site navigation, it’s simple and straight forward.
I also tried out their Twitter support and sure enough my tweet appeared on their demo site immediately. Try yourself by including the #clicky tag in a tweet.
Check out Clicky here
I’ve also noticed a lot of sites doing any kind of data visualization are turning to Open Flash Charts for their charting needs. You can learn all about it here.