This document summarizes a seminar on rate-distortion theory and variational autoencoders. It introduces rate-distortion theory, discusses how it relates to variational autoencoder models, and summarizes several papers on this topic. These include papers that explore fixing issues with the evidence lower bound objective in VAEs, examine how rate-distortion theory relates to human memory distortions, and propose a method called "echo noise" to achieve exact rate-distortion in autoencoders.