In Premier League are 20 teams.
40 in total between 1992 and current season 2007. See http://www.premierleague.com/page/Statistics/0,,12306,00.html
45
The NFL started out with 14 charter franchises, only 2 of which remain, the Decatur (IL) Staleys (now the Chicago Bears) and the Chicago (now Arizona) Cardinals.
just sunderland