http://www.news-leader.com/apps/pbcs.dll/article?AID=/20060911/ENTERTAINMENT10/609110315/1094 from http://www.tv.com/the-simpsons/show/146/matt-groening-sees-no-end-in-sight./topic/256-499447/msgs.html
"The landmark 400th half-hour, due to air next May, is a spoof of Fox's "24" that's titled "24 Minutes" and features the drama's Kiefer Sutherland and Mary Lynn Rajskub as their characters."
400 is so far away (season 19?) Can't wait for this one. :D