The first I've chosen to discuss is "Europa and the Bull" by Titian. The story depicted in this image is that of the God Jupiter who falls in love with Europa. So he turns himself into a bull and convinces Europa to climb upon her back and when she does he carries her away and uh, well I'll let you figure out the rest.
"Among the many theories proposed over the last decades, the one that seems to be the most corroborated is the interpretation of the painting as the realm of Venus, sung by the ancient poets and by Poliziano (famous scholar at the court of the Medici). On the right Zephyrus (the blue faced young man) chases Flora and fecundates her with a breath. Flora turns into Spring, the elegant woman scattering her flowers over the world. Venus, in the middle, represents the “Humanitas” (the benevolence), which protects men. On the left the three Graces dance and Mercury dissipates the clouds."
It really is worth looking up some of the other theories on it though, highly recommend.
The final work I've chosen to discuss is "The Expulsion from the Garden of Eden" by Masaccio.
Not technically a painting, but a fresco, located in the Brancacci Chapel, to me, this image is one of the most haunting of all time. The title pretty much explains what it depicts, the moment Adam and Eve are escorted by an angel from the Garden of Eden after committing the Original Sin. The torment on Eve's face and the way she covers herself is so powerful. Adam also shields his eyes in embarrassment. It really is just a commanding work of art.
BONUS INFO! If you enjoy the art of this period as much as I do, or would like more in depth explanations, please take Art Survey I with Dr. Arthur Iorio. The man knows his stuff and was one of my favorite courses of all time. Enjoy!