I saw this kind of thing happen live in person last night. My dad just brought home a Derby Day and Fish Tales last night and my mom was not too happy to say the least. She says I'm now an accomplice, which is ok because my dad and I have been partners in crime since forever.
If you care to see pictures of the new FT, it's over in the "what pin did you bring home today" thread. And here's a link for Derby Day for the lazy: http://www.ipdb.org/machine.cgi?id=667