I did some a few years ago and had fun doing it. Too bad the models were wrecked when we moved.
Over the last few weeks I've been on a major model hunt. I haven't been disappointed. I've found several in a wide array of difficulty. So far I've only done a few of the simpler ones.
I've got a bunch of others I really want to do but I'm out of colour ink! WAAH!
I've got some highly detailed military models, Ecto-1, Back to the Future Delorean, Starcraft Terran Cannon....