Good thread lion-g!
One thing I try to be hot on is being gentle and fluid with turns, banking etc. For example, beginning a turn, making my 'rate of angle change' very steadily increasing, then anticipating when to gently decrease the angle.
My philosophy is to try to keep the aircraft in a 1G situation at all times (never achievable, but aim for the stars and you hit the moon right?), being smooth with throttle adjustments (especially when in clear air), so the passengers experience very little acceleration and can enjoy their G+T!
HBB
edited to add - Of course there is a time and a place for this - bombing into ACE at night with a stiff crosswind and high gusts means disregarding this 'philosophy' and flying the damn aircraft!