The Chilito is gone from the menu of over 80% of the Taco Bell's in the USA. This site don't mess around. It even has a "chili cheese locator" for the diehard fans of the menu item.
Hilarious transcript of a bit Letterman did years back. He pretends to work at Taco Bell and take orders from customers...often with hilarious results.
D True Hollywood of Arnesto Martinez, the famous Taco Bell Dog whos partying habits and lurid lifestyle were infamous during the late 90s Hollywood Scene.
Wikipedia gives us the entire history of Taco Bell and pictures of past and current designs. There is even a picture of their HQ in Irvine, California.