I'm a big power metal fan, so most of these are power metal but I sprinkeled in some others for good measure:
Van Canto (http://www.youtube.com/watch?v=FrtXkik0ey0) They are just fun to listen to, here is one of their best songs "To sing a metal song"
Gamma Ray (http://www.youtube.com/watch?v=MaSxUS-cD2U) The current band from one of european metals godfathers Kai Hansen, former founder of Helloween, they are just plain great.
Avantasia (http://www.youtube.com/watch?v=L-PkfKZAT6E) A coalation band with artist from multiple bands, like Alice Cooper, Micheal Kiske, Jorn Lande, Roy Khan and many more. Founded by the Edguy vocalist Tobias Sammet, If you like Avantasia check out Edguy as well.
Wintersun (http://www.youtube.com/watch?v=3vP8m1e9R1Y) A melodic death metal band by the guy from Ensiferum. He recorded everything but the drums on their only album this far. It's hard, it's fast, and it's fucking sweet, check it out.
Kamelot (http://www.youtube.com/watch?v=XvI5w0cG68o) A power metal band with one of the greatest vocalists of all time (in my opinion). Roy Khan, from Norway, is a opera trained singer with an unique voice and the pipes to back it up. He is the main reason to listen to the band in my opinion
Pagan's Mind (http://www.youtube.com/watch?v=xHAoHifynHM) A Norwegian prog-metal band. It might be my patriotism that's effecting me, but I think this is mabye the greatest metal band since 2000. Knut Rue, the vocalist, is trully awesome and gives his all in every song like his life depended on it. Another memorable thing about the band is the cover they did of "Hello Spaceboy" from David Bowie. Bowie himself have publicly said that he thinks their version is the best version of the song.
EDIT: the links didn't work properly, but just copy them into your search bar and they should work