Conference Talks:

``Six Lessons from the Landscape,'' String Phenomenology 2005 Munich
``The LHC and Hierarchies in String Theory,''  String Phenomenology 2006 Santa Barbara
String Phenomenology 2007 Roma
``Theory Space, the LHC and the Inverse Problem'',  12th Regional Conference on Mathematical Physics Islamabad 2006
``Predictions from String/M theory for the LHC'', From Strings to the LHC, Goa 2007
``Construction and Statistics of M theory Vacua'' , (PDF Slides),  String Vacuum Workshop,Munich 2004
``Observations on the Space of Four Dimensional String and M theory Compactifications'', DavidOliveFest, Swansea 2004 (Slides)
``M theory, G2 Manifolds and Four Dimensional Physics'', Strings 2002 Cambridge. (Slides , Audio)
``M theory, Singular G2 Holonomy Spaces and N=1 Theories in Four Dimensions'', Avatars of M theory, KITP
Santa Barbara 2001. (Slides , Audio)

Talks on G2 holonomy vacua by Edward Witten:
M theory Dynamics on Manifolds of G2 Holonomy, DavidGrossFest, KITP Santa Barbara (Slides, Audio)
M theory Dynamics on a Manifold of G2 Holonomy, Avatars of M theory, KITP Santa Barbara (Slides, Audio)

Other Conferences:
String Vacua and the Landscape ICTP 2006
Cosmology and Strings Workshop ICTP 2007

``Strings'' is the main String/M theory conference of the year.

Strings 2002
Strings 2003
Strings 2004
Strings 2005
Strings 2006
Strings 2007