Watch Eric Greenspan Talk 'Grilled Cheese Mania' on CBS

Is something called "grilled cheese mania" sweeping the nation? If a bunch of people screaming "hot cheese" at a camera crew is any indication, probably. CBS News' Bill Geist visits LA's annual Grilled Cheese Invitational — the self-proclaimed "American Idol of grilled cheese" — to explore the wildly different varieties of grilled cheese sandwiches (beware: this is done through the use of cheesy puns and vaguely sexual-sounding grilled cheese categories).

Also: LA chef Eric Greenspan, who's set to open a restaurant solely dedicated to grilled cheese, serves up a signature sandwich of raisin walnut bread, tallegio, apricot-caper puree, tomatoes, arugula, and short rib. Says Greenspan of his unorthodox creations: "Anyone who sits there, who is going to come to a grilled cheese restaurant and be like, 'This isn't a grilled cheese, this is a pastrami-and-cheese sandwich' — you're not getting it. Is it a grilled cheese sandwich? I don't know. Eat it." Go, watch:

Video: Grilled Cheese Mania Sweeping the Nation

· Grilled Cheese Mania Sweeping the Nation [CBS]
· All Sandwich Coverage on Eater [-E-]
· All Eric Greenspan Coverage on Eater [-E-]