The 2002 DVD Mind Meld - Secrets Behind the Voyage of a Lifetime (buy here) features two moments of interest to any student of Bill Shatner's hair.
The first is a brief example of the "Real Hair Reflex" (see here for more on that). In the midst of telling us that he doesn't have an addictive personality (except perhaps concerning toups?), Shats scratches his head. He then shifts into a classic "rear toup smooth over" - except in this case, it is instinctive, a throwback; since 2000, the toup has long gone, replaced with some kind of surgical transplant...
In the midst of this maneuver, there is a strange edit in the program, and suddenly Bill Shatner is no longer scratching his head. Some have suggested that this cut may be toup related - we doubt it, it seems more a simple trim to tidy up Leonard Nimoy's talk, but who knows?
Here is the clip:
Secondly, we have a brief Nimoy toup meld, reminiscent of Spock's mind meld with the Horta in the Star Trek episode "The Devil in the Dark".
This moment comes near the very end of Mind Meld. As the two very dear friends engage in a hug, Nimoy suddenly does the unthinkable placing his hand directly on his brother's head. What was he thinking? Was this the ultimate act of friendship - a person so close to Bill that he can even touch the hair? Was it a subtle attempt to mind meld with the hair? What did Nimoy learn and why hasn't he made his findings public?