I’ve written a tiny web app called “I Like This Band” that allows you to enter a band’s name in a search form and get a random list of 20 similar bands. Click on any band and you get bands similar to that band, or click on the “Google ’em” link to Google the band. Mouseover the band’s picture and you’ll see a truncated bio.
Nothing too exciting, but cool for people like me who just want to find bands that are similar to other bands without having to navigate a bunch of random bullshit to do it.