Kuala Lumpur – Suggestions?

We’re considering going to Kuala Lumpur for a week in March. I’ve only been through the airport, so I really have no idea if this is a good idea or not. Do any of you have any advice? I considered Bangkok, but it’s quite a bit cheaper to head to K.L. via AirAsia, unless of course going to Bangkok is well worth the difference in price. The catch is that I have to book it by tomorrow.

If we head to K.L., is a week too long? What should we absolutely see when there? Are there many photo ops?

Thanks for any help you may be able to offer!