The toupee BLT.

Sounds like a gross sandwich that would have you spitting out tufts of hair, right? But in this case, BLT stands for "Bill's Layered Toup".

In 2006, Bill Shatner did a commercial for DirecTV that integrated new footage of himself as Captain Kirk into existing Star Trek footage filmed for Star Trek VI: The Undiscovered Country in 1991. You can watch the commercial below:

By this period of his life, Bill Shatner was many years into his "Denny Crane" [later referred to as "Denny Katz"] hair phase (see here for our toupological analysis on the shift). What we therefore have in this commercial is an example of Bill Shatner (heavily caked in all sorts of makeup) creating a faux "TJ Curly" style toupee. Rather like a solar eclipse, this is a rare concurrence of stages of hairstyle that only happens once in a good number of years. For a brief moment, the scalp becomes entirely invisible as it is completely concealed by a passing toupee.

Schoolchildren visiting the William Shatner School of Toupological Studies watch a projection of a full Shatner toupclipse.

However, even though such a convergence of toupee styles is very rare indeed, far more common is for Bill Shatner to resort to various light hairpieces when his plugs apparently need some fine-tuning, or perhaps even for entirely stylistic reasons. More on that soon...

Finally, for those of you that believe that Bill Shatner stores away his old toups (perhaps for a future exhibition in the Smithsonian Institute) , the DirecTV ad would appear to suggest that this isn't the case. The toupee he wears in it is far less curly than the one he wore in Star Trek VI. It's more of a transition toup. More on that soon too...

Bill Shatner with director Nicholas Meyer in 1991 (sourced here).