I think I agree with my Polish friends that the sound is as if there was a Chinese person speaking Russian , although when I uderstand some words or sentences, they become much nicer sounding (something closer to Polish ).

To Learners of Turkish language:
Here is a tip, to make you sound more Turkish in your speech.

While it is not always true, generally the stress seems to be on the second or last syllables of Turkish words, but in English the first syllable seems to get the stress.

Example:
Imagine a guy named Ahmet. While he would be called Ah-MET in Turkish, with an ever slight stress on the second syllable...An English-speaker would tend to call him AH-met.

Try both pronounciations and hear the difference.

The stress of individual words is not that difficult to follow. However, when it comes to the sentence rythm it is almost impossible to sound even close to Turkish for me. One of the factors is what Lyndie said - adding all those suffixes in one's mind is really difficult.

Talking Turkish with proper rhythm is like driving a car. Perfection comes with time and practice.

I find that as I learn, the words and sentence's that I know well flow off my tongue. The longer words take extra time to learn.
It really helps with pronounciation if you can listen to someone talking Turkish, even if it is only on media file on the computer. I listend very carefully when I was in Turkey a couple of weeks ago, to how things were being pronounced. Someone actually commented on how well that I was pronoucing words, which really pleased me. It's nice to know that you are getting it right, let alone being understood