If anyone watches SportsCenter, they might have noticed that the anchors have been quoting the show quite often now, calling Justin Mourneau "the Hiphopopotamus," proclaming that it's "Business time" and most recently that the umpire tells Ozzie Guillen to "be more constructive with your feedback" before ejecting him.
This pattern can be taken as a sign that Flight of the Conchords are subtly seeping into the collective pop culture subconscious. To be constantly referenced on such a mainstream stage is a dangerous line, that if crossed could make them in fact too popular. Before you know it, the same people who like Mind of Mencia are talking about the Tape of Love.
This is unlikely though, as the stlye of Flight is in some ways too low key to attract any kind of idiot mass audience. Just enough of a fanbase (makes it sound bigger, put base on the end of it) to renew it for a second season will benefit the show best.