Today it's a classic Doctor Who character, Brigadier Sir Alistair Gordon Lethbridge-Stewart - also known as simply "The Brigadier". The actor who portrayed him, Nicholas Courtney passed away this last February. Thank you for being the Doctor's trustiest companion, Mr. Courtney.
On a different note, I wanted to quickly share with you another creative expression of Who-love; Larissa emailed me to share something... unique. She actually draws Doctor Who characters on bananas. Yes, bananas. Check 'em all out here!