I like to look at the media depictions of these characters and compare them to their mythological counterparts. Disney's Hercules was ridiculous and a missed opportunity. But the way they depicted Maui was really, really good -- and when you consider that Maui is slightly different in every Polynesian culture that discussed him -- almost plausible as legitimate Polynesian mythology.
If there are any modern “pagan” worshippers of the traditional gods, I hope they’ve preserved the fundamental version. Probably closer to any truths.
I’m not exactly sure how they worship their gods, but I’ve heard there are some feasts and artwork dedicated to certain gods. In Iceland most people (even Christians and Atheists) attend a “Þorrablót” which is feasting in honor of Þór.
When I speak of the old gods, I throw Yaweh (God or Allah depending on the sect) in there as well. A 5000 year old run counts as an old god in my book.
Previously I was able to tell people these stories and they would enjoy them for what they are. Now most people giggle at them because they can only think of the Marvel characters.