I've done a little bit, but not for a while now. Started off with the moon, which I guess most people do, did a few star trails by stacking multiple exposures, and even had a go at the Orion Nebula.
If I can ever find the time to set the scope up properly so that it's tracking as true as I can get it without a guiding scope, I'd like to have a go at a few more DSO like the Andromeda galaxy and other nebula.