Bacon wrapped shimp are good. Veggies & dip are a staple, as are relish trays with olives, pickles, pickled beets & whatnot.
But people - we have managed to miss the obvious!! Deviled eggs!!!!
*** edit to add..... one year I was crazy enough to make 100 of these little bastards***
http://appetizer.allrecipes.com/az/CrmChsPngins.asp