As of the 1.2.8 Update, these are the "Utility Blocks", as listed in the creative tab, added by DivineRPG:
When the player stands on top of this block, they take fire damage.
Functions similarly to a ladder, but when the player reaches the top, the player receives a temporary speed boost.
When powered by a redstone current the block becomes solid and can be walked on.
A storage block for redstone. No current use.
Acts as a pressure plate. Can only be powered by players, ignores mobs and items.
When jumped on, the player is launched into the air.
Has 54 slots, and can be placed next to each other.
When travelling in a minecrat along an Uvite Rail the minecart does not slow down.
Has 27 slots, can be placed next to another chest. Can be opened even if it has a block on top of it
An enchantment table that enchants at the highest level without bookshelves. Currently cannot enchant books properly. It will give you a book with enchantments rather than an enchanted book.
Molten Furnaces, Oceanfire Furnaces and Whitefire Furnaces do not require fuel. (Not sure if 100% correct)
Greenlight Furnace and Moonlight Furnace both require fuel. (Again, not sure if 100% correct)
Functions like a furnace. If placed in the nether works without fuel.
Acts like a powered rail but does not require a redstone current.