Google has just launched a new section of Google.com, Google Phone Gallery. Listing some of the latest (and some not so much) models of currently available phones, this is a great tool for first time Android users to browse the devices side-by-side cross carrier.
This is a great tool for new and experienced Android users alike. Many of us has compared phones but this is definitely the most comprehensive, cross carrier, option available. The list of devices can be narrowed down by manufacturer and operator and is currently available for the US, UK, Europe, and several Asian markets.
Expect updates to the site to bring in newer devices, more countries, and maybe even a Google price search to find out where the best deal on a specific device is at any given time.