I'll have the landing lights on below 10000', in a holding pattern at any Alt, day or night. I'll turn them on to see wether I am in cloud or not during the night. I'll leave the logo lights on at night. Just to may be seen better from the side.
During LVO I'll taxi with the wing inspection lights on, maybe even strobes. Just to be seen a little earlier. And maybe that saved me from being hit by that crazy pushbacktruck driver in CDG last winter. There were only about 5m left...
I'll turn on the center landing light when taxiing at dark areas of an airfield, because sometimes my taxilights just simply suck.
Nic
PS: When flying longhaul to Africa a few years ago, we'd turn the lights on at top of descent... or off at top of climb...