Compucolor II computer emulator
This is a javascript-based emulator which runs in any modern browser, i.e., one which supports the Canvas element.
The Compucolor II was a 1978-era 8080-based microcomputer built into the housing of a 13" color TV. It was one of the first home computers to support color graphics, and like many microcomputers of it's day, it booted into a BASIC interpreter.
Visit http://www.compucolor.org to learn more about this computer.