This actor’s impersonation is amazing. I am still dying over this: If Ian McKellen performed "Baby Got Back" - YouTube
Better than Jonathan Coulten’s singer/songwriter version! Baby Got Back - Jonathan Coulton - YouTube
That’s awesome! He really has the voice down.
My favorite version of “Baby Got Back” is still the mash-up with Yes’s “Owner of a Lonely Heart,” entitled “Owner of a Lovely Butt.” 
If it were Sir Patrick Stewart, he wouldn’t even need a parodist. He’d do it himself. Oingo Boingo.