From time to time (hah!), I have given the titular Doctor some attention in the form of doodling and sketching.
Firstly, here's a quick doodle of David Tennants 10th Doctor I did in 2009, near the end of his time as the character:
Fast forward now to earlier this year, there I did a pencil Drawing of the current Doctor (11th), Matt Smith, sporting his now destroyed Fez:
And here is the even-more recent doodle of Tom Baker fourth Doctor I did (as shown in this blogpost I posted last month):
Finally, Here is the above doodle, that has been marvellously coloured by Spoony McMooch, (who is an amazing artist, and has a blog, featuring his brilliant webcomic, SkuzzMunch RIGHT HERE!):