Pros: You can use it as a pretend bow and arrow as you jump through your local woods as you play Legolas, the fearless elf from Lord of the Rings.
It can be used for self defence. You can whip it back and forth furiously as you crowch into the fetal possition, thus dissableing any possiblility of a frontal attack by your attacker.
You can change the channel with it when you lose your remote.
Cons: It won't help your core nearly as well as most (if not all) compound movements.