These clips are from a show that was on a few years back. I had gone searching for the whole Takei episode but so far only found the following:
Thank God You're Here (US Version) : George Takei (http://www.youtube.com/watch?v=jmn8S9ICVYY&feature=youtube_gdata#)
This other trek-themed skit is also good for some laughs:
Thank God You're Here - Jason Alexander (http://www.youtube.com/watch?v=QpORw0qghGA&feature=youtube_gdata#)