It does not require an intimate understanding of D&D to enjoy, just in case that put you off. If you've never played, but you know the general idea of how the game works, then you should be okay.
Agreed. I think I might've appreciated the slobberworm test more if I had ever played D&D, but as it stands it doesn't require more appreciation than, say, Dresden Codak's 'Dungeons & Discourse' comic.
This is the monthly thread for posting media of various types that you've found that you enjoy. I find that exposure to LW ideas makes me less likely to enjoy some entertainment media that is otherwise quite popular, and finding media recommended by LWers is a good way to mitigate this. Post what you're reading, listening to, watching, and your opinion of it. Post recommendations to blogs. Post whatever media you feel like discussing! To see previous recommendations, check out the older threads.
Rules: