If you like very melodic and fast power metal, you should really check out Edguy... The band is from Germany, and contains 5 very young musical talents. They are all from the age 20-22 or something like that.
They have released 3 full-length albums - Kingdom of Madness (1997), Vain Glory Opera (1998),Theater of Salvation (1999) and one demo; Savage Poetry. I really don't know anything about the demo, but you sure as hell should get the albums! They all rule!