Here are some of my favorites depending on location or mood:
American Breakfast: Chicken Fried Steak w/gravy and crispy hashbrown and bacon, toast and butter on the side with strawberry jam; Chicken and Waffles; Steak and Egg.
Belgian Breakfast: Belgian Waffles with fruits and syrup, hot chocolate, chocolate dessert, tea.
French Breakfast: Croissant, Strawberry Jam, Fresh Fruit, Peppermint tea; Quiche; Various pastries.
Chinese/Hong Kong Breakfast: Variety Dim-sum (Fried or Steamed), porridge, and jasmine tea; BBQ selections; braised sweet pork feet; glutinous rice wrapped with some sort of leaf, the contents can include varieties of meats, mushrooms, 1000 year old egg, etc (I call it bak-cang).
Singaporean & Regional Breakfast: Kaya Toast, Soft-boiled egg, warm milk tea (teh tarik); Singaporean Chicken Rice; Bakut-teh; Malaysian Nasi Lemak; etc.
Japanese Breakfast: Rice, pickled selections, dashimaki tamago/tamago, selection of fried or poached fish, miso soup, hot green tea.
Austrian/German Breakfast: Schnitzels, fried eggs, potato croquettes, apple strudel, tea.
Korean Breakfast: Rice, various kimchi, various hot soups or stews, hot rice tea, Korean Murtabak (or folded pancake).
The Indonesian selection is quite plentiful so I'll try to remember as much as possible. But these are in their traditional names as finding english names can often be quite difficult.. (Descriptions will be given)
Indonesian Breakfast: Nasi Pecel (Rice with veggies in peanut sauce); Nasi Krawu (Rice with braised beef and innards, includes cooked beef dendeng (jerky), and coconut dendeng; Lontong Cap Go Meh (Derived from the Chinese specialty, eaten during Cap Go Meh Season); Nasi, Mie, Bihun Goreng (Fried Rice, Noodles, Rice/Glass Noodles); Nasi Bebek Goreng (Fried Duck Rice with lots of sambal); Chicken Porridge (area styles differ); Nasi Campur (Mixed rice, usually combination of several items put into 1 (area styles differ)); Nasi Rawon (Braised beef cubes in dark rich broth in rice, eaten with sambal and sprouts); Babi Guling (Balinese roasted pork, crispy skin, tender meat, served along with balinese sambal and spicy ground pork satay; etc.
My Indonesian selection tends to be plentiful because most if not all can be eaten all day and are usually preferred as breakfast. I wanted to include lots more, but then again, it'll be a pretty long list to cover..