I finished up the rest of the Fifth Doctor's run over the past couple weeks:
The Awakening, Frontios, Resurrection of the Daleks, Planet of Fire and The Caves of Androzani.
Interestingly enough the Fifth Doctor's last serial, The Caves of Androzani, was probably his best. Robert Holmes was completely up to form as everything in the serial worked.
Well with the possible exception of the magma monster...