Not only that... But according to Muppet Wiki's articles, in one of the Muppet Magazine issues, which contains pop icon parodies (mostly of the musical variety), there's a poster of Kermit and Piggy titled Nerdy Dancing which is a parody of Dirty Dancing.
Hope this helps churn out some updates for the fics Cath... And congrats on your 500th post, or post #D if going by Roman numerals. You're halfway to becoming an SM!