haha, amazing. how did you ever find out?
So, I don't really like Glee (I did watch that episode!), but that is so cool! Did they tell you about it before hand, or have to ask your permission to use it?
It was completely chance that I even saw it there in the background. I didn't even really notice it until that scene was almost over. I suppose it's possible that they had to ask American Greetings permission to use it, but I'd say probably not. I'm not sure how that type of thing works.
That's so awesome that you spotted it!