Not out of spite to Kimiko (I love Samsungs) but my bit of advice: Do NOT fucking buy your TV at Best Buy.
Same TV, 160 bucks less, free shipping:
Samsung LN-40A550 40" Series 5 1080p LCD HDTV (LN 40A550) at Vanns.com | features
Make absolutely positively sure you're getting the best possible price. I'm picking vanns because it's where I bought my Samsung, but feel free to look around for better prices. I can only speak to my positive experiences with the vendor I paid ~1700 for my 7 series. The shipping was timely, professional and best of all I didn't have to deal with GeekSquad or extended warranty upsells.