Although we just showed you how to use your phone as a USB drive, which is excellent for copying media or just carrying files between computers you sync with, one downside was it wouldn't work for Office files (docs, PowerPoint, Excel) or PDFs.
Luckily, over at Marauderz Stuff, they figured it out: they created a simple webserver program for your local network. The idea is you download and install this mini-app to your PC, run it and then via Wi-Fi, you can connect your phone up to your PC. Since Mobile Internet Explorer allows downloading of documents, that's all this is doing: creating a local web page where you can list files to transfer easily.
It's almost too simple.
The author even includes a walk-through video (after the jump, along with directions) to show you how it works and how it looks. Seems like the Windows Phone community is rocking pretty hard these days, solving quite a few "issues" with ease.