There are several artists with this name:
1) Russian hard & heavy band from Yuzhno-Sakhalinsk. It was founded in 1995 by talented guitarist Andrey Romanov.
Uptodate 4 albums released. Band is well known in the Far East of Russia.
web:
http://www.rockgeroy.ru/view/groups/15956.html
http://vkontakte.ru/club963046

Last members:
Vitaly Saranchin - vocals
Andrey Romanov - lead guitars
Dmitry Kapustuk - lead guitars
Vitaly "Vitt" Pakeev - bass
Anton "Simba" Novikov - drums

2) Russian punk-hardcore\emocore band with female vocals from Rostov-on-Don.
Excess is:
Oleg - drums;
Jenya - vocal;
Marya - bass, vocal;
Ilya - guitar, vocal.
3) Ex-Yugoslavian Punk Band
Arsen Vukelić - vocal
Boris Pleić - bass
Zoran Kovač - drums

Lyrics - Ilya / Music - Excess / Pictures - Jenya.
web-site: http://excess.boom.ru / e-mail: excess_03@mail.ru

4) Excess (american-band) contributed to the soundtrack for the movie "Queen of the Damned" with their song "Tricky". ;

5) French Heavy Metal band founded in 1983.
http://www.metal-archives.com/band.php?id=7695

6) Indonesian Grindcore Band