(I loved that song back in the day, but can you just imagine the outcry it would raise if it came out today?! 1970 was such an innocent time by comparison...)
No it's not your imagination because I've also often thought that the Penguin's look on Gotham shares more than a passing resemblance to Barnabas. In fact, I've often wanted to post certain photos of the Penguin that I've come across because in them he looks so uncannily like Barnabas, but I've just never gotten around to it...