Pump:
I set aside two days a week to devote to abdominal/core trunk strength. Every movement your body makes originates in your trunk. A weak trunk makes for a weak body. That said; I complete a variety of ab exercises. Incline situps are an excellent way to target your abs; however be aware that ab work that "binds" your feet (such as the incline bench, where your feet are locked in place/secured) may put undue stress on your lower back. I do not encounter a problem, however I have worked with clients who have.
I had posted a link previously that reported the results of a study that concluded sit-ups on the swiss/resistance ball were the most beneficial ab isolation exercise.
When you do abs; switch it up and have fun. I used to hate doing them until I researched it, found some fun exercises and saw how much more effective my weight routine became.
Try swiss ball situps and crunches, hanging knee raises, roman chair leg raises, standard sit ups, bridges, etc.