Crissy - between your love of French-style sandwiches and your fascination with "la belle langue"- I think it may be time for you to start wearing a beret and look into music programs at the Sorbonne.
Anyone heard of the pan bagnat? It's a Nicoise tuna sandwich, but there's so many variations on it. Can be made with baguette slices, tuna, artichokes, olives, capers, sliced tomatoes, hard-boiled eggs, minced shallots...drizzled with olive oil and a bit o' balsamic vinegar. Mum-mum!
Shazzer, I'm definitely tryin' your tuna recipe. The foccacia intrigues me, as does the addition of dill.