bmike - I've got the world's greatest bar recipe posted in this thread:
http://www.bikeforums.net/showthread.php?t=296620
over in the training and nutrition forum.
For liquid of course there's my imitation and much better than Sustained Energy homebrew:
7 parts maltodextrin from a homebrew supply house w/ 1 part Optimum Nutrition strawberry soy protein (or whey if you're so inclined). Put a pint of this stuff in a waterbottle, mix and it's 3 hours food.