Being the avid redditor, I couldn't help writing my custom photo-gallery. An Adobe® AIR™ based application. Here's a screen shot. Want it? Right-click and do a 'Save link as ...' here. (If there's a better way, let me know.)

Of course, you'd need to install the AIR runtime first.

There are some limitations: you don't see more than the top 25 images in each category. But then a 100 images is something of a start. Ain't it mate? Feature suggestions are most welcome.