A math journal published by Elsevier published over 300 research articles written by the Editor-in-Chief. The articles appear to have bypassed the peer-review process entirely.
Elsevier, in cooperation with some pharmaceutical companies, published over 5 journal-like entitities from 2000-2008. These "journals" were given names that sounded basically reputable, but were essentially reprints of works that appeared in other Elsevier journals and featured works that touted the benefits of drugs produced by these drug companies.