M-theory was mentioned by Master Chin kung briefly about the
11-dimension 
You tube video:
http://www.youtube.com/watch?v=7mfh-3XHrYU&feature=related
Part of
http://www.pbs.org/wgbh/nova/transcripts/3014_elegant.html
BURT OVRUT: We know that there would have to be
11 dimensions for this theory to make sense. So there must be 11
dimensions. We only see three plus one of them. How is that
possible?
BRIAN GREENE: For most of us, it's virtually
impossible to picture the extra, higher dimensions: I can't. And
it's not surprising. Our
brains evolved sensing just the three spatial dimensions of
everyday experience. So how can we get a feel for them?
One way is to go to the movies.
....
MOVIE SCREEN BRIAN GREENE (in theater): So
dimensions all have to do with the independent directions in which
you can move. They're sometimes called "degrees of freedom."
THEATER BRIAN GREENE: The more dimensions or degrees of
freedom you have, the more you can do.
...
BRIAN GREENE: The extra dimension Witten added
allows a string to stretch into something like a membrane, or a
"brane" for short. A brane could be three-dimensional or even more.
And with enough energy, a
brane could grow to an enormous size, perhaps even as large as a
universe.
..
BRIAN GREENE: The existence of giant membranes
and extra dimensions would open up a startling new possibility,
that our whole universe is living on a membrane, inside a much
larger, higher dimensional space.
It's almost as if we were living inside...a loaf of bread? Our
universe might be like a slice of bread, just one slice, in a much
larger loaf that physicists sometimes call the "bulk."
And if these ideas are
right, the bulk may have other slices, other universes, that are
right next to ours, in effect, "parallel" universes.
Not only would our
universe be nothing special, but we could have a lot of
neighbors. Some of them could resemble our universe, they
might have matter and planets and, who knows, maybe even beings of
a sort.
Others certainly would
be a lot stranger. They might be ruled by completely different laws
of physics. Now, all of these other universes would exist within
the extra dimensions of M-theory, dimensions that are all around
us. Some even say they might be right next to us, less than a
millimeter away.
But if that's true, why can't I see them or touch them?
BURT OVRUT: If you have a brane living in a
higher dimensional space, and your particles, your atoms, cannot
get off the brane, it's like trying to reach out, but you can't
touch anything. It might as well be on the other end of the
universe.
JOSEPH LYKKEN: It's a very powerful idea because if
it's right it means that our whole picture of the universe is
clouded by the fact that we're trapped on just a tiny slice of the
higher dimensional universe.