"Other" just ate my hard drive
There are many things that 'other' could be. This Apple KB article details what 'other' space is:


OS X: What is "other" space in About This Mac?


…but basically, there's not only one thing that it could be, or one thing that everyone's suffered from.

Your best bet is probably to run something like Daisy Disk or similar to find large files to delete. Alternatively, use Finder and search for large files sorted by Date Modified so that you can see recent files that might be taking up large quantities of space.