A quick anecdote about the insanity of the screening: Before heading to FLL last weekend, I bought a sandwich and my girlfriend bought a salad, and got a bag of ice to keep the two salad dressing containers cold. By the time we got to the airport, the ice had nearly all melted. The TSO saw her bottle of water and made her trash it. The bag of melted ice (and salad dressing containers) that held as much water as the water bottle? The x-ray operator didn't catch it, no problem.
We both felt so much safer.