It's easily one of the best diners on the planet! The food is great and the service is efficient. It's open 24x7 which is great for my 3am cravings. It's a great spot to be at after unofficial- you'll always have a great story to tell and have some fun times at the diner at that time. They have a jukebox that's seldom used but still nice to have when you're in a great mood. Also, their fries are by far the only ones that I've thought can match up to the McDonald's fries.
The staff is really really nice! I remember once when it was freezing and I got a hot chocolate with some eggs, and the lady gave me another hot chocolate to go for free just because it was really cold out.
They also will make you custom things as long as they have the ingredients that you request. I've been to all the locations in the Champaign-Urbana region, and this is probably the best one! It's only ever shut on New Year's eve and Christmas day. The one in downtown on Neil is never shut.