Also, make sure everything is in full working order. Who's in charge of yardwork? You or the landlord? Are there sheds/garages/other things you're not allowed to touch on the property? Many rentable houses (and annoying owners) won't let you use certain things they store there.
Bring a nightlight and plug it into all the outlets - make sure they work and aren't loose. Also make sure the wiring can handle that many people in the house - meaning multiple computers, tvs, game systems and such on at once. If it's an older house, don't bet on it.
Make sure that the owner will be the one to organize and be there for any repairs. We're leaving our current place at the end of the month. Our last straw was the shower breaking and then the owner left for vacation before the shower was fixed. It was broken for 10 fucking days. And when he got back, he said "I've just been on vacation, I can't get time off work, would you stay home for the plumber instead?" My answer was fuck no, and we gave our notice a few days later. (We're also on our second washer and dryer and third fridge, he only buys refurbished crap, so be careful of that happening to you.)
As Craorach said, get everyone's payment agreements in writing. You'll have water, electricity, gas, tv, internet and phone bills. Work out who gets the better bedrooms based on money or who's awake first. Do you want the one up at 6am to have the bedroom in the back of the house so they have to pass everyone else's rooms and clunk around the kitchen while someone is sleeping in the next room?
Check the pets policy as well, the noise policy, bus schedules, etc. Make sure it's a neighbourhood that will accept you. I know the area around my parent's house is turning into rentals since people are retiring and selling to people who renovate and rent to students, and it's really changed the neighbourhood for the worse. My dad takes out the garbage next door because they let bags pile up until raccoons and skunks start tearing into it right outside our back door. Make sure everyone cleans, or your neighbours will hate you.
... I guess I'm done for now? We're moving into a townhouse at the end of the month, and it's a month-to-month rental so we're pretty nervous about who our neighbours will be. Our unit was pretty torn up by the last residents and the building is a year old, so please, keep the place you move into clean and tidy for whomever comes after you.