You can always skip the fillers, you can check the filler list here for example. Other than that there's nothing I can think of.
As for movies I personally didn't watch any DB and DBZ movies, only the DBS ones. But that doesn't mean they aren't good. Bardock: The Father of Goku, Worlds Strongest, Coolers Revenge, The Return Of Cooler, The Tree of Might, Dead Zone, Fusion Reborn - those are probaly the ones worth watching.
