Many discs have been created with the instructions on this site:
Whole discs
"Friends" Boxset - Warner Home Video
"Mike and Molly Season 1" - Warner Home Video
"Machete" - Kino Świat
"Phil Collins: Going Back - Live at the Roseland Ballroom NYC" (German release)
"Trigun Badlands Rumble" - Dynit Srl
"Mindcandy Volume 3" - Fusecon, Hornet
"Keeper'n til Liverpool" (english: The Liverpool Goalie )
"Kommandor Treholt og Ninjatroppen" (english: New Norwegian Hope )
"Koselig med peis" (english: Norwegian Cozy )
There are many x264-encoded discs out there which we haven't heard about. Tell us if you know of any.
Menus
"Il favoloso mondo di Amélie" (original title: Le fabuleux destin d'Amélie Poulain - english: The Fabulous Destiny of Amelie Poulain)
"La Tigre e il Dragone" (original title: Wo hu cang long - english: Crouching Tiger, Hidden Dragon)
Discs authored by http://www.anteprimavideo.com/
"The Town" - Warner Home Video
"Lord of the Rings Extended Edition" (various small segments) - Warner Home Video
"Sofia Coppola" - Pathe Distribution
Demo Disc
We've created an example Blu-Ray disc that fits on a DVD: http://x264dev.multimedia.cx/?p=328
Please tell us using our Feedback and Comments form if you've authored a Blu-Ray Disc with x264: