Whilst browsing wikipedia about this subject, found a link to http://www.pisearch.de.vu/ (currently unavailable though). Struck me that this would be a good way to collect personal details about people (‘try it with your credit card number’ 🙂
Further browsing has turned up Pi-Search, which you can use to look for sequences in the first 200 million digits of pi. Did you know that the sequence 12345678 occurs at position 186,557,266? Well now you do.
The Feynman Point is also interesting. Maybe one day, I’ll give both Richard Feynman and Pi an entry of their own.