Based on the Digital Photography Review ("dpreview.com") website, no. See:
http://www.dpreview.com/news/0801/08012403canoneos450d.asp
yes by downloading EOS MOVIE RECORD
No it does not. These Canon EOS cameras have video mode: EOS-1D Mark IV, 5D Mark II, 7D, Rebel T1i, and Rebel T2i. (as of June 2010)
no
Canon eos rebel t3 slr is a better camera compared to canon eos rebel t2i
Absolutely yes. Canon EOS 450D has the same mount as Canon EOS 400D, wich is EF and EF-S.
Yes, with the right adapter.
You cannot record video/sound with Canon EOS 20D. It takes only photos with RAW/jpg output format.
The Canon EOS 500D is made in Taiwan.
Canon EOS 500D, Canon EOS 7D and Panasonic Lumix DMC-GH1 are among the best HD digital cameras for video recording. Yes, they have an on-camera editing function.
In the settings, change it from PAL to NTSC :)
There are plenty of places that has the canon eos online. One place that has this camera available is at http://www.pricegrabber.com/canon+eos+d2000/products.html
One can purchase a Canon EOS 300D in the official Canon store website. In addition, one can go to Costco or Walmart to find the Canon EOS 300D to purchase.