personally I hate paying income taxes, so I have a CPA get me as much back as possible.
I think the best system would be to do away with income taxes and have a national sales tax. That way, even those with "tax free" income (under the table wages, illegal immigrants, drug dealers, etc.) would pay a federal/state tax. Sure, the sales tax rates would go up, but no income taxes??? Hell yeah.
Although I'm sure there are flaws in this system too, and some of you will point them out. Even if they are few, there are always those who will figure out a way around it (ebay, only buying used items maybe?). It seems like a good idea though.