I adore the simplicity...
I have four images on my board index: the logotype, home icon for the breadcrumbs and transparent 1x23 / 1x90 png images for two div's, to make their background seem like it's a gradient. But that's about it, it loads like, instantly, lol.
Here are some of the screenshots, if you guys want to know how it looks like:
Board index while you're browsing as a member.
http://i.imgur.com/ZQC7k.png
As a guest.
http://i.imgur.com/WzlON.png
Forumdisplay.
http://i.imgur.com/OmoF5.jpg (sorry for the bad quality, Imgur didn't upload it as png)
Showthread.
http://i.imgur.com/2jTCd.jpg (sucky quality as well, lol)
Memberinfo.
http://i.imgur.com/lsicH.png (not finished yet)
Registration page.
http://i.imgur.com/cQ43C.png
Sorry for the smudged parts, they're NSFW.
I think the members like the style, at least no one complained about it - everything can be found easily and it's fast as hell.
P.S. It should be obvious, I use vB3.