Ask HN: Where do you go for web app design inspiration?

I'm currently working on an in-house web app (…which will be released as open source when it's nearing completion), relating to video distributio. Think of it as TubeMogul, without the statistics.

The problem is that I'm mainly a programmer, and not a designer. For this project, I have the responsibility for both. Although I tend to have an eye for design, and I can execute fairly well, I have a hard time coming up with good ideas.

So, I'm wondering: Where do you go for web application inspiration? There are tons of «CSS Galleries» out there, but few/none relating specifically to web applications.