IMOSCAR.COM ("I'm Oscar..... Dot com") is a website set up by Oscar Bluth after he is incorrectly sent to prison in place of George and finds it difficult to convince people he is not actually George. ("The Cabin Show")
Fox Network set up a real site at IMOSCAR.COM but has since been turned off. A version of it can be found here: IMSTILLOSCAR.COM
While on trial, Saddam Hussein says "I'm 'no scar.' dot com", similar to Oscar's protestations. A real life IMNOSCAR.COM was set up by Fox Network featuring the same design, but written in Arabic. ("Exit Strategy") An archived version can be seen via the Wayback Machine.