I read that there is a problem with some older (3-4 years old) high definition TVs that only recognize 1080i/480 resolutions. Madden is set to run at 720p, so when the Playstation 3 tries to play it on these TVs, it downscales it to 480 instead of upscaling it to 1080i. Here is an article about it:
http://ps3.ign.com/articles/746/746282p1.html
Has anyone that owns a PS3 experienced a problem with getting high def graphics on an older (only support 1080i/480) high def TV? Thanks!