Buffy the Vampire Slayer Poetry
The Jossverse has one canonical poet, revealed in the BtVS-5 episode, Fool for Love: "They call him William the Bloody ... because of his bloody awful poetry! Haw haw haw haw!" Spike's poetical tendencies get four mentions over the two series, and we hear two excerpts from his poems, both truly, deeply awful lyric odes à la Keats or Byron.
From Lies My Parents Told Me:
Yet her smell, it doth linger,
painting pictures in my mind."Cecily" it discharges from twixt its wee beak.
Her eyes, balls of honey,
Angels' harps her laugh.
Oh, lark, grant a sign if crook'd be Cupid's shaft.
Hark! The lark! Her name it hath spake:
From Fool for Love and Not Fade Away:
My soul is racked in harsh repose
Midnight descends in raven colored clothesInspired by your beauty effulgent.
But soft, behold! A sunlight beam
Cutting a swath of glimmering gleam
My heart expands, 'tis grown a bulge in't,
Just before the end of the poetry slam scene in Not Fade Away, Spike shouts out one more title for fans to play with, "The Wanton Folly of Me Mum", which suggests that (a) he's actively composing (since he's unlikely to have touched that particular subject prior to Lies My Parents Told Me) and (b) he's broadening his repertoire. A few nights after the episode aired, Sylvia Volk wrote the definitive "Wanton Folly".
Fans have added many other styles and subjects to Spike's oeuvre. Sonnets, villanelles, free verse, more odes and even haiku have been written in his voice. Members of Tea at the Ford compiled a number of theirs into a chapbook, and Gillo and Anaross have both embedded multiple poems in larger prose works. 
Other works, such as macha's cante fable, descant descending, Sylvia Volk's concrete poems, and Stephen Burt's "Scenes from Next Week's Buffy the Vampire Slayer", straddle lit and crit. macha has recorded several of hers as podfic and collaborated with Fallowdoe to set several more to music.
- Sylvia Volk, The Wanton Folly of Me Mum. (Accessed 25 July 2009)
- Sounding Sea, Bloody Awful. (Accessed 25 July 2009)
- Quinara, Maudlin Drivel Spike Scribbled in A5. (Accessed 25 July 2009)
- Sobsister, Rhymes with Luck. (Accessed 25 July 2009)
- Gillo, Verse and Worse. (Accessed 25 July 2009)
- Mere Ubu, Spaiku. (Accessed 2 August 2009)
- Tea at the Ford, The Chapbook of William the Bloody Rhymer. (Accessed 25 July 2009)
- Anaross, My Life Closed Twice. (Accessed 25 July 2009)
- Lynnenne, Liam and Will, A Tragedy. (Accessed 2 August 2009)
- Quinara, Spikeid. (Accessed 2 August 2009)
- Trixiefatcat, Last Summer's Corn. (Accessed 2 August 2009)
- Crowgirl13, Veruca. (Accessed 2 August 2009)
- Tkp, Prerequisites. (Accessed 2 August 2009)
- Hth Sotto Voce (accessed 26 April 2012)
- macha, descant descending. (Accessed 2 August 2009)
- Sylvia Volk, Phoenix. (Accessed 25 July 2009)
- Burt, Stephen, Scenes from Next Week's Buffy the Vampire Slayer. (Accessed 2 August 2009)
- Tea at the Ford, Tea at the Ford Recording Room. (update link when site completes relocation)