I use ezPDF (was free on Amazon App Store, but only 99 cents normally), and it renders graphics-heavy retro gaming magazines perfectly! I do have to zoom to read some small text, but I had to pretty much do that with GoodReader on the iPad anyway.
Would something like that read fine? Apologies for a pile of questions: Nook Color isn't available here in Canada, and I was thinking of taking a bus trip to Buffalo to grab one of these if the Nook is worth it.
Just tested it. Reads fine in ezPDF and Adobe Reader for Android (Adobe even will "reflow" text so that you can size text up for readability, but on the downside the pretty typesetting and formula layouts are lost when you do that, so ymmv). You can zoom to view or even set it landscape mode and it'll adjust to fit width, which reads really well for bad eyes.