In 1998, a sleeper cell of brilliant social terrorists made their presence known in the United States via a sketch comedy show like no other on Comedy Central. With no government ties and unlimited resources, they whiled away the long hours they spent in their secret underground lair creating havoc amongst an unsuspecting population. Then, in 2000, they vanished into thin air -- or, more precisely, off the thin air -- only to reemerge now, more deadly than ever with two complete seasons on DVD. They are the Upright Citizens Brigade.

Many devotees may know them as Amy Poehler, Matt Besser, Ian Roberts and Matt Walsh, simple mild-mannered improvisational comedy geniuses who founded two of the most popular, edgy and influential comedy venues in the world -- in New York City and Los Angeles. Or you may recognize them from their appearances on Saturday Night Live, Late Night with Conan O'Brien, Blades of Glory, Bring It On, Old School and many other projects.

But do not let them fool you. Deep in their hearts, they always have been and always will be Adair, Colby, Antoine, and Trotter. If you come into contact with their Season 2 DVD, buy it immediately and get to a safe location to watch it. From there, you'll know what to do.