One of my favorite hockey analysis websites is back with their 2011 NHL Review - a massive 90 page document that details the performance of teams and players during the 2010-2011 NHL season. The writing is clear and thorough, and the author (Alan Ryder) provides a great introduction to his Player Contribution (PC) tool. The spreadsheet with PC data is also included for reference and reader exploration.
It's a very educational and eye-opening look at the relative value of individual players. The 90-page length makes this a slightly daunting, but very rewarding way for stat-geeks like me to spend some time reading about performance in the NHL.