The Museum of Modern Betas is a sparely-designed list of over 800 web sites in beta. I often wonder what Beta even means these days, given how many years Google Groups (for example) has been in beta. Of course, I can't exactly throw stones these days...

In a similar let's-poke-fun-at-the-latest-crop-of-web-companies vein, here's The Logos of Web 2.0.