Über, in German, is a prefix AND a seperate word (Z0MG!) As a seperate word, it can be used as an adverb or a preposition.
Über can also be translated as an adjective such as over, above, and super. The most frequent users of it as an adjective are gamers, chatters, and forum users.
1. Z0MG!!! TAT GuN iZ TEH ÜBER 1337!
2. (as an prefix) übernehmen - take over (nehmen = take).
3. Über *random German* - Over the bridge.