Filters..UV & Polarizing

[Fotografer]

I don't have any filters for my canon t1i yet. I was looking at the Bower filters. Anybody here use them? I was looking at the UV and Polarizing filters. </p>
<p> I was looking at these. <a onclick="mugicPopWin(this); return false;" oncontextmenu="mugicRight(this)" href="http://www.amazon.com/Bower-72MM-CPL-Video-Filter/dp/B000VUZN3I/ref=sr_1_1?s=electronics&amp;ie=UTF8&amp;qid=1290015072&amp;sr =1-1" target="_blank">http://www.amazon.com/Bower-72MM-CPL-Video-Filter/dp/B000VUZN3I/ref=sr_1_1?s=electronics&amp;ie=UTF8&amp;qid=1290015072&amp;sr =1-1</a></p>
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<p>Is a polarizing filter necessary?</p>
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<p>Thanks.</p>
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