Chuck Bass Pictures

One of the saddest things about Gossip Girl ending this week is that we will no longer get to see Chuck Bass try out any new smolders. Gossip Girl's reformed bad boy has spent the last several seasons working on his expressions, whether it's a brow furrow, a scowl, or a sultry smirk. To say goodbye to the series — and the well-dressed bad boy who became a good man — here are the 50 best "I'm Chuck Bass" smolders.