Some Glenlivet 12 year. I picked it up in duty free on my way out of Toronto last month. I almost didn't make home to RDU with it because in Boston I had to go out of one terminal and back through security to get on my connecting flight. The crazy thing is that my bags were checked *before* I bought the bottle. There was no way for me *not* to have more than the allowable 3 oz of fluid when going through the security check in Boston.
Luckily I was able to convince the Delta agents to let me check the box.
Anyone going through duty free with a connection on a different airline through Logan would have had the same problem, I imagine. Ridiculous.