Alright... I have found a new Ap for my iPhone and am in love with it! The Nike Training Club.  This thing is great... there are tons of workouts to pick from and you can hammer out a great core and strength workout in 15 min when you are pressed for time or choose one of the longer ones (30 -45 min) depending on what you are wanting to accomplish.
This week I did the "Core Crunch":

Each exercise lasts a minute:
1. V-ups
2. Full Extensions: Extend your legs out straight and arms above your head holding a med ball and then bring your legs in and the med ball to your feet. (I didn't have a med ball, but substituted using a weight)

3. Suitcases: Squeezing the ball with your inner thighs, bring knees and elbows toward each other until your shoulder blades are off the ground. (Again, I had to get creative and used my roller to hold between my knees).

4. Side Plank Crunches (30 seconds each side)
5. Frogger with Swivel: Start in pushup position with hands close together; Jump your feet to the outside of your hands; Jump back to start position; Twist through the hips to bring one knee up to the opposite elbow; Bring the knee back and swivel the opposite knee up.

Repeat 1 -5
6. Plank
7. Side plank (1 minute per side)
8. Opposite arm/leg supermans
9. Kick downs: Lie on your back with legs straight up int he air, 90 degrees from your body; Keeping your legs straight, lower them as far as you can.

Great little session to finish out my training day!