I've read the first 5 pages of this thread so far,but not the rest, so forgive me if this has already been posted.
Here's a list I found of non-HFCS foods:
BREAD
# Amana Multi Grain Bread
# Aunt Millie’s Old Fashioned Butter-Top Wheat
# Brownberry’s Arnold Natural Health Nut Bread
# Country Hearth 12-Grain Bread
# Earth Grains 100% Natural 7-Grain Bread
# Franz “McKenzie Farms” Old Fashioned Buttermilk Bread
# Milton’s Bread (most, if not all)
# Natures Own 100% Whole Wheat bread (note, other varieties do contain HFCS, but not this one)
# Oroweat Mult-Grain Bread (but watch out for HFCS in their other varietes)
# Martin’s Breads & Rolls (including hot dog buns/rolls and such)
# Pepperidge Farms 100% Natural Breads
# Pepperidge Farms Whole Grain Wheat Bread
# Rudi’s Organic Bakery Buns
# Vermont Bread Company breads
CEREAL
# Cheerios
# Giant brand Instant Oatmeal - most flavors
# Kashi (most, if not all)
# Kix
# Life ceral (regular and cinnamon)
# Nature’s Pride Organic (most, if not all, varieties)
# Kellogg’s Reduced Sugar Froot Loops
# Trader Joe’s Graham Bites Cereal
CONDIMENTS
# Annie’s Naturals Organic Ketchup
# Annie’s Naturals Organic Honey Mustard
# Annie’s Naturals Smokey Maple BBQ Sauce
# Cascadian Farms Sweet Pickle Relish
# Frenchs Honey Dijon Mustard (I don’t think most regular mustard contains hfcs, but a lot of the “honey” mustard does, which is why I’m listing some honey mustards here that don’t.)
# Frontera BBQ (Barbecue) Sauce
# Gates BBQ Sauce (a barbecue sauce mainly found in the Kansas City area)
# Heinz Organic Ketchup
# Hellman’s Mayonaise
# Meijer Organic Sweet Relish
# Nature’s Best Organic Tomato Ketchup
# Vlasic Sweet Gherkins
# Woeber Sweet And Spicy Mustard
# Consorzio Bbq Sauce Organic Original
# Trader Joe’s Hot and Sweet Mustard
CRACKERS
# Dare Vinta Crackers
# Milton’s (most, if not all)
# Pepperidge Farm Goldfish
MARINADES
# Acadia Naturals Tuscan Grill Marinade
# Consorzio Brand Marinades
PEANUT BUTTER
# Jif Peanut Butter
# Skippy Super Chunk Peanut Butter
# Trader Joe’s brand Creamy, Unsalted Peanut Butter
SALAD DRESSINGS
# Annie’s Naturals Goddess Dressing
# Annie’s Roasted Red Pepper Vinaigrette
# Blanchard & Blanchard (Country Italian & Caeser Parmesan)
# Brianna’s Blush Vinaigrette Salad Dressing
# Drew’s Salad Dressings
# Olde Cape Cod Traditional Caeser Lite
ICE CREAM / FROZEN NOVELTIES
# Ben & Jerry’s (most, if not all, varieties, but watch for the kinds that add bits of candy bars and cookies)
# Breyer’s All Natural Ice Cream
# Dreyers/Edys Strawberry Fruit Ice Cream Bars
# Haagen Dazs Dark Chocolate Ice Cream Bars
# Breyers Pure Fruit Strawberry Fruit Bars
# Stoneyfield Farms
COOKIES
# Archway’s Molasses Cookies
# Destrooper Almond Thins Cookie
# Destrooper Butter Crisp Cookies
# Keebler Pecan Sandies Cookies
# Keebler Simply Sandies Cookies
# Lu Le Petit Beurre Cookies
# Lu Scottish Recipe Shortbread
# Mi-Del Snaps Ginger
# Nature’s Best Chocolate Sandwich Creme Cookies
# Newmans Wheat Free Fig Newton Cookies
# Newmans Own Ginger Os Ginger N Creme Cookies
# NewmanS Own Alphabet Cookies
# Pepperidge Farms Butter Chessman Cookies
# Pepperidge Farm 100% Natural Varieties
CHOCOLATE
# Cadbury - Most Varieties
# Hershey’s Symphony
# Hershey’s 100 Calorie Wafer Bar
# Hershey Skor Candy Bar
# Hershey Special Dark Candy Bar
# Dove - Most varieties
OTHER CANDYJELLIES, JAMS AND PRESERVES
# Bonne Maman Preserves
# Hero Jams & Jellies
# Smuckers Organic Strawberry Preserves
# St Dalfour Preserves
# Trader Joe’s Reduced Sugar Organic Strawberry Preserves
MAPLE SYRUP
# Trader Joe’s Organic Maple Syrup
# Pretty much any actual maple syrup is devoid of hfcs - most “pancake syrup” does not even have any maple syrup in it and is pretty much all sweetener and water and “stuff”
PASTA SAUCES
# Classico (Most varieties)
SODA POP
# Archer Farms brand Natural Italian soda
# Bawls Guarana Soda (most varieties)
# Blue Sky Soft Drinks
# Boylan’s Sodas
# Cheerwine (the glass bottle varieties)
# Jones Pure Cane Soda
# Goose Island
# Dublin Dr. Pepper (Dr. Pepper from a bottling plant in Dublin, Texas)
# Nantucket Nectars
# Virgil’s Sodas (the cream, cherry and root beer varieties)
SPORTS DRINKS
# Accellerate
OTHER BEVERAGES
# Bolthouse Farms C-Boost Smoothie
# Bolthouse Farms Vegetable Juice
# Capri Sun ALL NATURAL 100% Juice
# Horizon Flavored Milks (chocolate, vanilla, and strawberry)
# Ocean Spray Grapefruit Juice
# Ovaltine (dry chocolate drink mix)
# Simply Juice (orange, limeade, and lemonade)
# Sweet Leaf Tea
YOGURT
# Breyer’s
# Brown Cow
# Dannon All Natural Vanilla Yogurt
# Dannon All Natural Coffee Yogurt
# Dannon Lite & Fit Vanilla Yogurt
# Great Value Light Nonfat Yogurt (most varieties, if not all)
# Horizon Organic Fat Free Yogurt
# Nancys Reduced Fat Plain
# Nancy’s Whole Milk Honey Yogurt
# Stoneyfield Farm Yogurt
# Stoneyfield Farm Yobaby Yogurt
GRANOLA BARS
# Kashi
# Nature Valley Oats & Honey flavor granola bars
OTHER
# Cool Whip Sugar Free
Nothing I saw there had HFCS. In fact, most items I looked at didn't even have corn syrup! Some did, but alot didn't. 
We haven't been able to find those anywhere without the HFCS (unless he wanted to switch from chicken to tofu...then we could find something at Whole Foods...but he's 10, he doesn't want tofu!)
Now the challenge will be when he goes back to school! Getting the teachers to listen when your child has an allergy(especially not life threating) will be a challenge! He will not be buying lunch and I will have to know if there is a birthday or party so I can provide a treat for him. Other than that I have explained to him the most common things that have HFCS and to avoid them or face having the embarrassing digestive problems again. 
