Despite not happening a lot more in the NHL, there are some famous (or infamous) offer sheets that occurred in the past. Shea Weber signed a 14-year offer sheet worth $110 million with the Philadelphia Flyers in the 2012 offseason.
The Washington Capitals have been fortunate in their history to have many solid defensemen play for the organization. They had Kevin Hatcher, Larry Murphy, and Rod Langway during the earlier parts of their history.