media-jack 

verb. (media-jacking, media-jacked, media-jacker)
Using the term "jack" (used here as "to steal") this refers to the situation in which one person is using one medium (of entertainment or otherwise) and another person 'jacks' the other person's attention to another medium.

For example, when one person is listening to music and playing on the computer and another person puts on a movie for the first person to watch.

Person one (the "media-jacker") -"Hey watch this awesome movie!"
Person two-"Aw, dude can't it wait? I'm facebooking and got some music on."
*movie begins, audibly trumping the music and dominating the attention of person two*

media-jack by Weats November 5, 2009

Mediajockey 

1. Someone who's on top of many different (social) media.
She/he manipulates and uses the media rather then being manipulated or being used by the media.

2. A media artist analogue to a discjockey.

A mediajockey uses and mixes different pieces of media to create a new creajaculation.

1. Bring your protestsigns! There will be a whole lot of camera's we can steal airtime from, like real mediajockeys.

2.What an awesome' mashup! She must be a real mediajockey to create something like that.

3. He does his layouts as a real mediajockey!

Mediajockey by Mediajockeys .nl March 13, 2011