Has anyone tried to get webOS to work?
I am looking to see how much work it would be to modify it to work or if webOS would have problems without heavy modification.
I think that Open webOS is going to be a more feasible solution than webOS if you're looking to port the operating system to the Raspberry Pi. HP has open-sourced a platform portability layer called the "Nyx Project" to help abstract some of the complications from the porting process. It's available on github here.
Open webOS 1.0 hasn't been released yet. It is currently slated for release in September 2012, and it may take some time before porting Open webOS to RPi gets any traction, but it is theoretically possible. Keep an eye on the Open webOS website to keep up to date the project's status.
EDIT: The beta of Open webOS was recently announced on their blog. It includes two builds, one for desktop and another for OpenEmbedded. This statement appears in the post
Our OpenEmbedded build provides the ideal development environment for porting webOS to new and exciting devices.
UPDATE: A video was posted onto youtube by user aaa801 showing Open webOS booting on a raspberry pi, although at this point it's booting into the console and the GUI does not appear to be functioning yet.