I actually found a great program and company for an ecommerce site, check out my 2008Software.com which I will be customizing with a proper logo and a few fine tuning things later this week, and as a result of the easiness and relative low cost of it plus excellent customer service, I'm actually going to do something similar on some of my other domain names. My question is, a few of my domain names are .TV, like digitalHDTV.TV and ireplay.TV and I'm wondering if that will negatively affect placement on google. Your thoughts?

Why should it? It's just a TLD.

Extensions doesn't affect google SERP rankings, you can even buy one domain and create whole websites on its subdomains and google won't care (just like yahoo).

.TV can go just as high as a .com depending on the name.