With any luck the sky will stay clear and I'll get some good photos of the Perseid meteor showers tonight. Three things make this infinitely easier than with the early digital SLRs like the D1:
1) Really long battery life so I don't need to fiddle with an expensive AC adapter
2) Built-in Intervalometer so I don't have to fiddle with a tethered solution
3) Much better long exposures (lower noise) so the images should need a lot less help when finished.
I'm still going with 30 seconds per exposure, but have left Long Exposure NR OFF as it operates by taking a same length dark frame so you can only capture 50% of the action if you use it.