RedHat and Mono
I believe we have legitimate and non-evil reasons why we can’t ship Mono.
Which is frustrating since apparently they can’t/won’t tell the community what those reasons are. Mono has all the cool toys: Beagle, Tomboy, Muine. Java has OpenOffice (ick). RedHat is basically saying we have to pass on some of the best app development being done for GNOME right now. So what happens if Mono becomes part of the GNOME core? Is there a fork?
Update: Check out “Language Subtext” at beatnikblog for a good overview of how things are shaping up (towards the bottom).