There is only one character who has appeared in all eight of the American Pie Movie's. He is Noah Levenstein who was played by Eugene Levy. Most of the original cast have not appeared in the more recent movies.
Out of all the American Pie movies the original made the most money with $235,483,004. The other ones did fairly well but most of them seemed to just be trying to cash in on the originals success.
Maybe some verses are, but basically it's about the plane crash that killed Buddy Holly, Richie Valens, and the Big Bopper.
If you are talking about the movie American Pie, there are six parts to the best of my knowledge.
American Pie
American Pie 2
American Pie 3 The Wedding
American Pie Band Camp
American Pie The Naked Mile
American Pie Beta House
n theres American Pie Presents: The Book of Love
The phrase diving for dollars was used in the movie America Pie. The term refers to someone who does not have any money. They look in and around every place possible to find some.