So someone on tumblr made an AI that learns words that people say to it and tries to string them together. It's been a couple days now, and some responses are almost kind of coherent. All of them are funny. She's being "raised" by tumblr, so of course Skylar knows about lots of important things: Waluigi Pokemon Colors That Dress Homestuck Poetry This might be the most adorable AI ever.
http://projectbot13.tumblr.com/post/117268486992/art-by-forvraengd-even-more-good-news#notes skylar and her creator are doing a charity event to help save the bees! just thought this was really cool. also any artsy types might be interested in the t-shirt design part.
Ooh, does anyone else remember the zdk12/IRIS "AI" ARG? I thought it trailed off a while ago but apparently not. Damn, gotta remember to catch up tomorrow. ...I don't have anything actually relevant to add, sorry.
A similar AI is sbnkalny, full name Dennis is going on more rigorously than your full combo takes, although sbnkalny gets a lot of its words from watching other people talk on an IRC channel. Edit: It seems they know of each other.