Cracked is about as good as breakfast gets in Champaign/Urbana. They've got a solid menu that can cater to any taste and a friendly staff. There's always music playing and the truck itself is a sight to see. If the line isn't backed up due to the rush from class being let out you can get a hot, fresh sandwich in just a couple minutes.
My personal favorite is the Vegasm with the Goy Vey being a close second.