I would eat everything without question except the meat, which I would give the "sniff test." I'd put the meat in the back, bottom shelf of the fridge, which I think stays the coldest.
6 hours looks to be your outside recommended time:
http://www.state.in.us/isdh/files/Power_Outages__2_.pdf
http://www.foodsafety.gov/blog/power_outages.html