Jennifer German: Plural.

John David Lamb: Media, data, criteria, are and should forever remain plural!

John Russell: Although this is not correct according to Latin it is common usage and our Latin friends do not speak any language any more ;-]

Yocheved Golani: Media is a mass noun, and collective nouns call for singular plural forms of 'be.' We can debate the merits of mnetonymy and synechdoche here, but this is a workable form of usage, in harmony with better standards of grammar.

Lisa Karam Middleton: Collective nouns should generally take the singular verb, especially when you are talking about the action of the group.

Charlotte Fox Luttrell: Media is a collective noun.

Paul Mulligan: Media inplies more than one type, i.e., press, tv, radio.

Mark H. Bloom: I know the second choice is correct, but it never sounded right to me. Plus, I do think of the media as a single entity.

Carrie Garbas: Media=plural.