When I was combing through stats I found something interesting on Chris Mason. For the last two seasons Peter Budaj of the Avalanche had a better save percentage than Mason. But, when you put those two seasons together Mason had a higher save percentage. Sounds impossible, but it's true. The reason is because of a statistical paradox, and it happened with a couple of other goaltenders this season: Niittymaki and Ellis, Biron and Dubnyk, Elliott and Budaj. All of the details along with the explanation are posted on Behind the Net here:

http://www.behindthenethockey.com/2011/6/8/2205752/statistical-oops