User blog comment:The Joker~/How can I rekindle my interest in Skyrim?/@comment-4057437-20121129045941

There are a LOT more than 81 dungeons... Also, there is a lot to Blackreach besides just what quests require. Unless you are using the PS3, there's also Dawnguard and Hearthfire, which you didn't mention.

You could also go on an Easter Egg hunt.