Welcome to Top-Shelf Takes, a weekly series from staff writer Mary Clarke all about the NHL. Lace up your skates as we dive deep into the epic highs and lows of this little sport called hockey. American Thanksgiving is one of the most important dates in the NHL. Yes, really! The day that most of the country spends eating good food and watching bad football is one of great significance to the hockey world. You see, dating back to the 2005-06 season, 76.3 percent of NHL teams in playoff spots on Thanksgiving make it to the postseason come spring. Of…