NFL 2K5 is the GOAT of sports video games. It was so good that EA panicked and paid out the ass for exclusive rights to produce NFL games.
It was made with ESPN. So every game had Sportscenter segments with Berman, Wingo, Kolber. At halftime and after the game you had Chris Berman commentating on highlights of your actual game.
The franchise mode is still unmatched, you had control over everything.
You would choose on what training and prep was done before the game. When making a new franchise, you chose everything. Colors, logos, designed the uniforms, and designed and built your own stadium. You had a mansion where you would use earned points from games to buy everything. Furniture, art, memorabilia, video games (that you could actually play), pool tables, etc. And you had 1st person mode, where you actually were in the helmet of your created player on the field.
And to top it all off, it was only $20 new while Madden 05 was $50