check the thread at the top of this forum called
Great Tweaks,Apps,SPB,Themes,ETC..
That should contain lots of the cool mods for this phone thus far, though in 6 montsh who knows what will be out for it.. As far as programs there are lots scattered all over the different winmo forums.. try this place to get an idea of some that are for the Touch pro 2, which is similar to the Imagio.
Software worth installing on the TP2 *Continuously Updated, links in thread* [Jan 1] - xda-developers