¿Qué te ha dado esa mujer?

¡A TODA MAQUINA! is a must see for several reasons, but first of all, because presents the way the two men met for the first time, and even when they don't get quite along during the whole movie, at the end become friends.

¿QUE TE HA DADO ESA MUJER? is the sequel (advertised during the last seconds of the first one) and present the guys, now friends, dealing with the hardship of their friendship being threatened by the love of a woman, since one of them is madly in love and neglects the other.

Both movies are good, but I like the first one better and I recommend watching them together, to get the whole point.