Wedding Processional Vid plotting the course of a strange relationship
Sources: Addams Family, Coupling, Doctor Horrible, Dr Jekyll and Mr Hyde (1931), Doctor Who / Prime Computers, Farscape, Firefly, How I Met Your Mother, Mallrats, Modern Times, Much Ado About Nothing (1993), Pirates of the Caribbean: At World's End, The Princess Bride, Star Wars: Return of the Jedi, That 70's Show, Torchwood, Wall-E, Wonderfalls
Warnings: excessive adorableness and schmoop
Credit: Timeline by echan; jetpack_monkey did the clipping

More complete information, including spoiler warnings, beta thanks, premier data, and download info at the announcement in my journal.