Since people think my family is borderline dirty, I should point out that I vacuum the main areas of the house regularly; the kitchen almost every day (since it gets crumbs under the table), we wipe the kitchen counter and table every day, and the dishes never sit around in the sink for more than a half-day.
I regularly dust our bookshelves, tables, and other surfaces that collect dust (which happens after only 2 weeks, believe it or not!)
The kids are made to pick up their toys (and anything else they "got out") every night. I know this changing the subject from dirt to clutter, but it affects the overall "clean look" of the house.
Ethnically, my wife and I are mostly German. Among other things, that means we're clean (I heard that 100 years ago, you could "eat off the streets" in some German cities).
I'd like our house to be clean -- not antiseptic like a surgical room or hospital, but clean. No clutter or mess, and no dust or particles of "stuff" that need to be vacuumed. It should be clean like an 1850's German home :)