At first, I thought about editing my previous post, but since it's longer than that one…
After revisiting the texts from the Theoretical Minimum, I found this bit from a Classical Mechanics preface as a rather apt summary of the series:
IMHO the authors accomplished their job. In the series so far you have gateways to branches of physics you could expand on through other books:
Classical Mechanics by J.R. Taylor
Introduction to Quantum Mechanics by D. J. Griffiths (of Introduction to Electrodynamics fame)
Principles of Quantum Mechanics by R. Shankar
Diagrammatica: The Path to Feynman Diagrams by M. Veltman (quantum field theory in a nutshell, which also happens to be a title of a different textbook that's intended for newcomers :P)
Gravitation and Cosmology: principles and applications of the general theory of relativity by S. Weinberg (disputable choice, but I liked the fact that a lot of the calculations were explicit. Starts with a differential geometry refresher, which may or may not be enough)
Most of those are either from my undergrad courses or ones that I picked up at random at the library and liked a lot.