I followed this tutorial and got Eclipse to recognize the program I'm debugging.
However, after setting a break point, and steering the application to the break point, the application just seems to ignore it.
The code continues merrily as if nothing happened, and I don't get to see the variables I'm trying to look at.
Unfortunately I don't know what info to include here, so if you need more information, just let me know in the comments.
You have to be careful with what you are doing. There are some pitfalls when debugging node applications in eclipse. Here are some tips that might help you.
node --debug-brk your-script.js
Start with that until debugging works for the first time. After that you can try more unconventional cases.