This recent addition to Jemima's Trek is devoted to Khan Noonien Singh, her favorite Star Trek: The Original Series character. The muse may eventually write more mainstream TOS fanfiction, but Jemima doesn't recommend holding your breath for the Spock/Chapel fic.
Most of Jemima's TOS fic and filk concerns Khan. Items are listed in order of composition; new ones are marked "new".
There's only one Khanfic so far, but more are in progress.
Grand Opening (drabble, Empty Shell challenge, 4k) 5/03 The Doomsday Machine
Speak of me as I am (Khan/Marla, 20k) 12/03 Space Seed
What Man is This? (filk, Khan, 3k) 4/03 Space Seed
Raj of Rage (filk, Khan, 4k) 4/03 Space Seed
I Will Revive (filk, Khan,
4k) 5/03 Space Seed
ASC Awards 2003 first place for TOS Filk/Poem
Jemima subscribes to Yvonne's Type A feedback policy, which means you can send any sort of feedback you'd like, whether constructively critical, stark raving mad, pleasant, or gushing. The address is firstname.lastname@example.org, or you can use the handy feedback form.
The 1967 episode that started it all - see Khan at his youngest and finest.
TWoK was the best Trek movie ever, even if you count GalaxyQuest.
The Eugenics Wars: The Rise and Fall of Khan Noonien Singh by Greg Cox are two non-canonical Pocket Books volumes which attempt to integrate the pseudo-history of TOS with the real late 20th century.
Here's a very small selection of TOS writers, with emphasis on Khan:
The Fall 2003 Khanfest is going on now. Non-smut and non-slash fic seems to be allowed, if not yet well-represented.
For writing inspiration, try these TOS Transcripts.
Before she met Khan, Jemima used to write fanfiction about inferior characters. You can find her Voyager and Buffy here at Jemima's Trek, along with the Borg species list, a Trek links page, arbitrary awards and the dark doings of Section 31.