Two words, spoken with a strong John Cleese, bad French accent: "wafer-thin!!!"
Check it out: that's a wafer with real, working 22nm chips. The chips on that wafer pack 2.9 billion transistors in the space the size of a fingernail -- double the density of the current 32nm chips.

The wafer is a bunch of SRAM chips -- static random access memory that is often used for L1 and L2 processor caches.
CPUs based on the 22nm manufacturing process will be available by 2011. Intel Atom is also headed down to 22nm and even 15nm.
Dan Warne is attending the Intel Developer Forum in San Francisco as a guest of Intel.