The New England Patriots play in Gillette Stadium in Foxborough, MA which according to the stadium website as of October 4th, 2009 has a seating capacity of 68,756.
The seats are according on how big the stadium is.
There are over 100,000 seats in the mogadishu football stadium
There are 78,000 seats at real Madrid stadium the Santiago Bernabeu.
The University of Southern California Trojan Stadium is called the Coliseum and there 93,607 seats.
This Website Said 68000 Which Is Quite Small But I Like Football (or soccer if your american) which is much better
That varies considerably from one stadium to the next.
The current capacity of Washington Grizzly Stadium is 23,117, but by the start of the 2008 football season, the stadium will have over 25,000 seats.