We have recently added a new section to the site in order to track and link to various custom Android ROMs that are available. These ROMs include Cyanogen as well as many others you may or may not have heard of. The list will be updated and will include the latest ROM versions will be listed for various compatable devices.
You can find the list here.
So once you have rooted your device, check out our list and see what other flavors of Android are available.