Cussing in Commits: Which Programming Language Inspires the Most Swearing? is a deeply amusing chart based on analysis of one million GitHub commit messages. Tracks the use of profanity in commit messages by programming language for the project.
Oh, the topic map follow up project?
Grab a similar number of commits and create topics and associations. Be imaginative. Create topics for geographic locations of committers. Time of date of commits. Pre or post .0 releases, etc.
Tracking one dimension, such as cussing by language can be amusing. Having the ability to create intersections between dimensions via associations, that could be quite useful. Here is a fun data set to explore.