Dr. Hawking was scheduled to visit the Perimeter Institute in Waterloo, Ontario, Canada last year, but had to cancel due to illness.
However, that was only the first of a series of planned visits. This summer, therefore, will see the first of the series of visits instead.
The current plan is that Dr. Hawking will visit the Perimeter Institute in June and July 2010 (http://www.perimeterinstitute.ca/News/In_The_Media/Prof._Stephen_Hawking_to_Visit_Perimeter_Institute_this_Summer
), and that there will be a special Perimeter Institute presentation with him broadcast on TVO on Sunday, June 20, 2010 at 8pm EDT (see link for details).