As the title stated, I'm just now picking up node. I've looked into Express a little, mostly by watching the videos on expressjs.com, and was pretty impressed.
However, it reminded me a lot of Rails. I always felt like I never really understood what was going on when I worked with RoR. It incorporated so much magic that it really made me unconfident and pushed me away. I don't need to get down to bare metal but I like to have a good sense of how/why things work they way the do.
It's possible just my ignorance of Jade and Sass made the Express videos look like wizardry.
Possibly pertinent: I've worked with JavaScript and some libraries (jQuery, Dojo, Raphaeljs, ESRI) for a few years now so I'm not completely js uninitiated.