How can you make pancakes more healthy (without making them taste bad)?
We have had good luck with canned pumpkin in the pancake batter.   That and some pumpkin pie spices go really well with maple syrup.   We just add half a can to a variation on Alton Brown's pancake recipe.   It generally adds one pancake or so to the pile.

Adding a cup of blueberries or sliced strawberries has also worked out well (especially with a thumb of minced ginger tossed in).