I commute on a Trek ZX 6500 with Bontrager 26x1.95 tires. I know; they're pretty big with some serious drag. However, they work well for two reasons.
1) My commute to work is roughly one mile, so the drag isn't that big of a deal.
2) While not part of my daily commute, there are two areas that I ride bi-weekly with terrain that does not lend itself to traditional commuting tires. First, there is a quasi-dirt and gravel road full of glass, metal, and other flat-inducing objects that I ride through occasionally. I ride that way because it's a short cut with absolutely zero traffic. Second, another massive short cut links one part of my town to another via an abandoned/condemned road. The "road" is more like a wide, rough trail.