Yeah, I know how you feel. As the real football season starts to get into swing, I generally lose interest in Madden and NCAA. Obviously not total interest. This is my first year playing NCAA and it's honestly pretty cool as a change of pace, but I have to split time between it and Madden.
However, with Halo 3 coming out, I won't be playing the games daily anymore. Maybe once every 2 or 3 days I'll pick the thing up. I'm doing a dynasty report here, so I tend to get a bit more into it than normal, but still, I'd go insane if all I played was NCAA. I need some intermittent Halo 3, the occasional Civ IV, and even The Sims 2, despite the fact that usually my sexual orientation is called into question when I mention the last one.
There's just something thrilling about rebuilding a college team to greatness, taking a break, building a bachelor pad, having 3 love interests, saving the world while seemingly conquering those crazy Germans all within a day. Ah...I love video games.
As far as Xbox 360's dying, I'm keeping my fingers crossed. Haven't had any problems yet, just a couple of freezes in NCAA 08 here and there. I don't know if I could cope for 4 weeks without a 360. Though I've heard some people saying if you leave the NCAA 08 disc in too long (ie. for dynasty report writing) it breaks the disc. I wish I wouldn't have to live in constant fear of my primary stress relief completely dying.