The 1.6 version of Equinox contains commented-out settings for Maven 2 Jetty Plugin. The reason these are commented-out is because this plugin didn't work with SiteMesh at the time. I checked again today, and it looks like they got it fixed. See Brett's post titled Developing with Jetty: Where Have You Been All My Life? to see why this plugin is so cool.
I'd love to see someone develop a TomcatLauncher, a WinstoneLauncher and Maven 2 Plugins for both. AppFuse works with Winstone 0.8.1 (a wicked fast servlet container with a good story behind its name).
In other Jetty news, Jan Bartel posted a nice tutorial today titled How To Use JOTM as the XA Transaction Manager in Jetty6.