I agree with petit, on validating issues, but in the end Kahil the choice is yours. It's always nice to know that everyone who owns a blog is attempting to keep up with standards :)
As to your overall look of your website? I like it, dark header inclusive. Sure, it sorta sticks out, but it doesn't offensively so. Perhaps a lighter color would be nice - its up to you.
I also like your reviews, which I mentioned above, and yes, I spent some time yesterday reading your colorful posts.
i just don't understand the whole validating thing because the things it picks up are all in the correct format for wordpress. afterall, wordpress is the one that generated them all.
Unfortunately, that isn't strictly true. WordPress for the most part inserts relevant code, but themes are another issue entirely. For the most part they are valid, but there's some out there that are not.
And I suppose it comes back to validating your markup to ensure your theme renders nicely in all browsers. Again, the choice is yours to make :)