The Garlic Jr. Saga¹: The Guardian of Earth, Kame, is under attack from the immortal Garlic Jr. who is determined to destroy Kame for imprisoning him inside the Makeo Star.
With Goku away, it's up to Gohan and Krillin fight.

The Trunks Saga: A purple haired boy from the future calling himself Trunks, informs the returning Goku from Namek that in three years time, two evil androids will show up and kill everyone that Goku knows except Gohan while Goku, himself will die of a heart disease which Trunks gives the antidote for.
So Goku and his friends train for their arrival.

The Androids Saga: Following Trunks' prediction, the two androids (Androids #19 and #20) arrive and start destroying everything in sight... but they're not the androids Trunks was talked about...

The Imperfect Cell Saga: Another android travels back in time from Trunks' future and is obsessed with absorbing androids #17 and #18 to make himself 'perfect'.

The Perfect Cell Saga: Cell has found #17 and #18 but the Goku and friends aren't prepared to let them be absorbed...

The Cell Games Saga: With the absorbtion of #17 and #18, Cell is complete and has no equal... so he wants to test his skills against the Earth's strongest with a tournament...

The Great Saiyaman Saga:Now a teenager, Gohan is going to high school. With his spare time he decides to become the city's superhero under the guise of the 'Great Saiyaman'...

The World Tournament Saga: Goku and co. take part in a large tournament to determine the world's strongest fighter but there are a few people present who look suspicious.

The Babidi Saga: Gohan and Goku need to stop the wizard Babidi from resurrecting the most devestating fighter in the universe: Majin Buu

The Majin Buu Saga: Majin Buu has been released and is destoying all life on Earth. Gohan is the only one whose power can stop it...

The Fusion Saga: Buu has gotten stronger and Gohan's power isn't enough. The earth's fighter's need to fuse together to become stronger...

The Kid Buu Saga: Buu has reverted into his most primal form: a child who doesn't have any guilt... Goku has only one last chance to rid the world of the pink menace....

During the course of the series, thirteen movies were made, but most of these did not actually go together with sagas, contradicting events, such as 'Dead Zone' which has Goku with Krillin rescuing Gohan. Set before the series, it contradicts the fact that Krillin is surprised that Goku has a son.
Two, however: 'Bardock: The Father Of Goku' and 'History of Trunks' were made from references mentioned rarely.

The Movies translated into English:

-Dead Zone
-The World's Strongest
-Tree of Might
-Lord Slug
-Cooler's Revenge
-The Return of Cooler
-Super Android 13!
-Broly: The Legendary Super Saiyan

-Bardock: The Father Of Goku
-The History Of Trunks