A lot of my favorite physics classes were Applied Physics. These were great as you used the building blocks from 1st/2nd year level to show complex phenomena in the universe. It is a shame this list has none of these.

Things like:

* Stellar Nucleosynthesis - S-process, R-process, stellar evolution

* Fluid mechanics - Navier Stokes equations

* Physical Oceanogrpahy - Ocean currents, tides, Pressure and Salinity effects

* Plasma Physics - MHD equations, Alfven waves

* Medical Physics - CAT, PET, MRI scanners. Radiation treatments.

* Planetary Science - Plate tectonics, Gas giant phenomena.

* Geophysics - EM, seismic, anisotropy

* Electron Microscopy - SEM, TEM, AFM etc.