One of my staples when I am eating well is hummus with broccoli and pepper slices (usually orange or red). I have also been known to include tiny tomatoes, snap peas, cauliflower, carrots and/or celery.
It is an easy way for me to eat large quantities of vegetables. It is especially great when traveling - I pack up a small container and all my veggies in bags with a small ice pack. It is such a treat!
I never really eat it with bread - occasionally as a spread in a whole wheat pita sandwich.
I go back and forth between measuring it and not. I think I usually have at least 2 servings at a time (one of the brands I buy has the serving size at 2 Tablespoons... what? NOT ENOUGH

). When I don't measure, I figure I am doing far less damage with hummus and veggies than I would do otherwise.
It's true if you make it yourself you could control what goes in. Cooks Illustrated has a recipe for Light Hummus (less tahini and olive oil) -
in this post near the bottom. Also if you add roasted red peppers for example that would cut the per-serving calories. Have fun experimenting!