An Apple TV 2 can be converted into a web server. This has been possible through Mac Mini Vault.
According to macminivault site;
One of the fun projects going on at Mac Mini Vault is our Apple TV webserver. As much as we’d love to see how many Apple TV’s we could mount into a data center cabinet, it will never be a sustainable service to offer. This project was a fun way to see how far we could take the A4 powered Apple TV. The Apple TV is running iOS 4.2.2 (obviously jailbroken) with lighttpd for a web server.