A quick search on Handelsblatt turned-up a Gangnam-style Christmas lights video. Not sure if it was on the first or second page though. ;)
You really should watch the original as it was pretty good. It's just been so overdone in the past few months that it's kind of irritating to watch now.
Still, my favorite take-off on the original was done by a Jesuit priest on the TWiT Network. On YouTube you can find it by searching for: Fr. Robert Ballecer Gangnam Style.