
Woohoo 6000+ downloads!
Profession is a really simple plugin to change the professions of villagers by right-clicking on them with an item in hand. With the default settings, use:
Just drop the Profession.jar file into the Bukkit plugins folder and start your server.
Video is of Profession 1.2 (update coming)

v1.3.6 - Fixed wrong material messaging
v1.3.5 - Built against Bukkit 1.13.1, added nitwit villagers and support for all villager careers
v1.3.4 - Built against Bukkit 1.7.2, added zombie villagers
v1.3.2 - Built against latest Bukkit dev build 1.3.2-R0.2 (Build #1541)
v1.3 - New features!
v1.2 - Added the ability to change the material used to set a villager's profession with a command.
v1.1.1 - Updated the message shown when right-clicking villager with a material not specified in the config. It now shows the valid materials from the config (if changed), instead of the default ones
v1.1 - Added config file so that you can alter the material used to change a villager's profession
v1.0 - Initial release
I'm no Java programmer, so feel free to download the source file and offer me some tips on optimizing the code (like adding more comments...), or just reuse it for something else :)
Shameless plug: The texture pack shown in the video and screenshots is from the upcoming Bromley Massive Vector pack (currently WIP). Look out for it here: Bromley Massive texture pack
Shameless plug number 2: Check out my other plugin 'Secretary' - it allows you to set and manage todo lists and reminders using a villager masquerading as a secretary. Bukkit dev page for Secretary
Shameless plug number 3: For all the Doctor Who fans out there, another one of my plugins: TARDIS