I have a 2007 Honda Accord. I change the oil according to the service monitor. It varies quite a bit (depending on what sort of driving I'm doing) but averages 8,000 Km (5,000 miles). I generally change oil at about 10% on the service monitor.
I change the filter every second oil change, just as Honda suggests. I have used HAMP (Honda After Market Parts) oil filters and currently WIX oil filters.
I generally use any brand name API SN 0W-20 oil, currently Pennzoil. I generally buy enough for 2 years of changes when I find a brand name oil at a good price. The car is in for a treat; I picked up some really cheap (for Canada) Pennzoil Platinum and that's what I'm going to use once the Pennzoil dino is gone. But I'll change it according to to the service monitor as well - may get a little extra cleaning.