1.
http://www.universal-koop.de/bonjovi...id=Germanwings

Germanwings has a contest where you can win tix and on-stage-tix for a show of your choice in Germany. More infos above.

2.

Viva (music TV channel) has a contest where you can win tickets for one of the shows in Germany, exept Munich. No word about if these tickets incl. on-stage-tix, they just write tickets for the shows though. You can choose for which one:

http://www.viva.tv/Events/ArticleDetail/id/168486