It's kind of hard not to at least be familiar with Abba, given the popularity of Mamma Mia. Not exactly the ideal exposure, given its reputation as the chick flick/musical to end all chick flicks, but hey, it's something.
Not a huge fan myself, more of a KC & the Sunshine Band kinda guy as far as disco goes. But if you don't like Dancing Queen, I have to wonder if you have a soul.