You can crack the cast iron by doing that "get it red hot" cleaning method. My friend broke one doing that in a camp fire (dropped it) I cracked one by cooling it too fast.

If you make homemade pizza.
Line the skillet with the pizza crust and start filling it up. When it's done it lifts right out.
This is also a good way to help season, the heat and oils of bread really help.

Because of Wendy asking I had to buy a two burner griddle. While I was there I was checking the prices of the skillets and I can't imagine getting a used Griswold any cheaper than what Wal*Mart has the new Lodges for (even the pre-seasoned ones).
I don't know what sizes Griswold and Wagner come in, but the main reason I retired my made in Mexico skillet is I couldn't get a lid for it. If you get a 5qt Dutch oven from Lodge, the lid fits the 10 1/4" skillet, 7qt is 12", 9qt is 13 1/4".

The way I do eggs needs a lid. I cook the bacon, break the eggs into the grease, shut off the heat and cover for 1 1/2-2minutes. Remove the lid and pull out perfect sunny side up eggs.