Unfortunately Comcast Chicago does not carry Current TV. Dish subscribers around the country and select cities carry Current TV. I sent a letter to Comcast requesting Current TV and they indicated they would note that I requested it. The process, as they explained, is that channels are prioritized by demand and eventually they could enter the lineup. (Basically, they go on a list)
I am writing in hopes you will write comcast and request Current TV be added. Media is increasingly becoming one of the main attractions to the internet, but consumption by television is still 2-to-1 versus the internet. People are simply consuming more. While I enjoy watching on my computer, it will never reach nearly enough people without being on television.
Write below to request it:
http://www.comcast.com/ContactUs/customerservice.asp