Peapod (through Stop & Shop)? Get $15 off your first order with promo code SSVP15B. This code is good until 4/30/10. Minimum purchase is $60. Delivery for orders under $100 is $9.99. Over $100 is $6.99. Peapod takes MFCs.
I used them once and it was a pretty neat experience. Definitely great if you just have a baby or gearing up for a big event. Some of their prices are actually really good on their website each week.