I can't testify to the sensibilities of the director, but it happened again tonight, this time with an African-American comic. Last night, I thought the cutaways were to hide edits in a too-long set (that was pretty mediocre), but it was really poorly done and awkward both nights.
That it happened again seems to me an indication that either whoever is booking Colbert's comics isn't prepping them correctly or that it's a deliberate choice to make sure the home audience is assured that these very average comics are hilariously funny. Points for booking a couple of non-white guys, but demerits for not choosing funny ones. (To put this in context, one of my least favorite things in any medium is audience-reaction shots; this is especially egregious in musicals and comedy specials where, rather than trusting that the audience will enjoy the performer, the director makes sure that we know the on-screen audience enjoyed them, so we are obliged to, as well.)
On the other hand, it was a nice change of pace from the invariably terrible musical acts that Colbert features.
--Dave Sikula