The Cracker Barrel series is called "Off Your Rocker".
Some Texas series that I can remember:
OHWS - One hit Wonder Series
EMDS - Eat My Dust Series
Ashes To Ashes series
Homie goes to........
Lift A Skirt
Visit a Park
Bridge Over Troubled Water
I believe that every cache hidden by SandBassKing and Queen is named after a song. That is kind of a series.
In Arkansas we have:
The Game of World Domination
And there is a beginning new series in some small town I think north of Searcy but I can't remember the name.
And the ultimate series of caches is the ODS series. .....poppy
May those who love us, love us. And those that don't love us, may God turn their hearts; and if he doesn't turn their hearts may he turn their ankle so we may know them by their limp.... An Old Gaelic Blessing