Where are you going to register? Not necessarily because you actually want anyone to buy you things there, or even that you will tell people to buy you things there. But for the perks, baby registeries are my favorite pregnancy hobby.
Target - teething toy (mine said the toddler!), pacificer (mine said the 9 m.o.!), 2 nb diapers, travel wipes, and $20 shutterfly g.c.. Eventually you get a one time use 10% off coupon, some cents off coupons and lansoah samples which I never use.
Fred Meyer - a coupon good for 10% off everything (including groceries) after baby is born. And its reuseable for 3 months. I do not shop there often, but DH loves them and he will be doing the shopping for the first few weeks.
Babys R Us - have not been yet. last time they had free formula and 2 free diapers. Not worth it unless its changed.
Motherhood Maternity - also not been yet this pregnancy, last time they had shutterfly gift cards, which I use so its worth it to me.
Anyone I am missing?