This website contains a sequential database of all 2^256 bitcoin private keys, spread out on pages of 128 keys each. The key to every bitcoin wallet, including Satoshi Nakamoto's wallet, is hidden in one of the pages.
Bitcoin keys generated today: 985,664
Also take a look at more bitcoin page statistics.
The odds of finding an active wallet aren't big, but who knows, you might get lucky. Any random page could contain a fortune.