I will survey recent work in my group on multiscale models of cells. I will describe how we model the individual states of a cell, and what new features are introduced when cells interact, whether by chemical signaling, by mechanical forces, or by cell-cell adhesion. In some cases, the examples are taken from developmental biology, and in other cases from synthetic biology, wound healing, and metastasis. While my focus will be on computational models, some connections to nonlocal and continuum models will be made.