Any video cam with popular file ormat?

maldini

Which video cam records in a file format that is easy to play back on computer using Windows Media player and also play on dvd player at home? I want something that is easy to play back without the need to convert to another file format. I heard Sony uses proprietary file format that forces you to use their software..

canon10D

for Win - avi/mpeg
for Mac - mov

myversa

yes, sony used their own format and I need to use their software to convert it into more popular format.