I love Google maps and all the special features. I like Bing's birds eye view. I like the maps that tell me about more than geography, too. They're all fun. So I was happy that Hank Green's latest video was about maps.
I highly recommend that you click through to the YouTube page and look at the About section beneath the video. Then click on "Show more." You'll find loads of links to interesting maps, enough to keep any map geek interested for hours.
But if that's not enough, how about some books? Although I haven't read any of the ones listed below, they're on my to-read list now that I know they exist.