One of the aliases that Edward Norton's character assumes in the movie Fight Club, as he is becoming addicted to medical support groups and needs a name for each different group he goes to (he does not actually have bowel cancer, sickle cell anemia, testicular cancer, blood parasites, or the like).
Norton was orginally going to make all his aliases names of Travolta characters from the 70s (and in fact had already appeared as Rupert and Travis) but somehow Cornelius crept in. Sadly, Travolta never appeared in the movie Planet of the Apes.