Fort Collins, CO

Many thanks to David, who send in lots of great info in April  and May 2012.
Walmart
1250 E Magnolia, off of Lemay north of Mulberry.
Look in the brown garbage bins in the back (N side of building) – there is always tons of decent produce. Usually there is a grouping of empty bins and a grouping of full ones.
The Vitamin Cottage
4318 S College
Throws away good food, but it’s hit or miss. I’ve had more luck at the VCs in Denver and Lafayette.
Bed, Bath and Beyond
110 W Troutman
Often has nice home furnishings in the dumpster.
Pizza Casbah
126 W Laurel
There’s an occasional pizza at night in the dumpster in the alley, though I’ve come up empty-handed more often than not.
Little Caesars 
1720 W Mulberry
Get there right before they close at 10 and they might just give you many pizzas. I’ve heard this is a very good spot.
Big City Burrito
510 S College
Arrive about 10 minutes before they close at 10 and tell them you want leftovers – they’ll give you a bag of salty potatoes and rice, and sometimes veggies. This always works but there may be competition.
Panhandler’s Pizza
1220 W Elizabeth
Go right after close (10) to dumpster behind building. They’re usually kind enough to just put pizza on the top of the garbage!
Gib’s bagels
2531 S Shields
Brand Spankin’ Used
227 S College – dumpsters in alley in the back
Various businesses dump here, lots of miscellania from the thrift store, as well as office supplies, bagels too. Probably the best spot in Old Town.

And there is a Food Not Bombs 24/7 drop off/pick up garage near Old Town, but you have to ask people in the know to get the address.