At a company dinner, the second bottle of 2010 Catena Malbec. Unfortunately I wasn't paying attention and the server didn't offer to have me taste the wine first. Of four bottles that night, this was the only one she didn't. As I was drinking something else, it wasn't until others said the cab I had ordered was much better than the Malbec and someone commented it might be corked. I didn't even have to guess as a newly poured glass got close and I could smell it from a foot away!