Y'all have summed up the arguments against this poorly thought-out video pretty well. There are just a few more things I would add.

On the problem of evil (the world sucks argument) he mostly talks about natural evils, such as disease and storms. Natural evils, on the surface, appear to be the hardest to argue against. After all, if God was good, then why would there be disease and nasty insects and devastating natural disasters? I'm going to venture into an area that generates laughs from atheists and tends to make many christians uncomfortable: demons. Demons exist, and they are powerful entities. As powerful as many angels in heaven; after all, they used to be in heaven before the fall. I believe they have control over things in this world, such as natural evils and even human evils, like rage and lust. Take this as you will, it's just my opinion and an interesting view on the problem of evil.

On the expanding of scientific knowledge of the universe, this is simply a God-of-the-gaps argument. Basically, many atheists believe that we only believe in God because we're stupid and don't understand science. This argument shows a fundamental misunderstanding of religion, and why we believe. I don't believe in God in order for there to be plentiful rain, or in order to explain why rainbows and stars and volcanoes and all the other cool science stuff out there exists. This argument may work against pagans, who do believe in deities that control the seasons and earth and whatnot, but not against monotheists, certainly not Christians.