Mono ARM port
The Mono ARM port is mostly complete: check it out from svn or from the soon to be released mono 1.1.9.
It has been bootstrapped on both little and big endian Debian ports (thanks to Geoff for enduring and submitting his Linksys NSLU2 to an extended compiling session to test big endian support).
Feedback from folks with Linux PDAs is appreciated: I'll see if I can prepare some binaries later today as well.