Haha, I like this meme ^^

Ichimaru Gin:
Kouji Yusa
- Nothing major... He's done little bit parts in Detective Conan, Blood+, Full Metal Panic, and a few others. check 'em out here. (http://www.animenewsnetwork.com/encyclopedia/people.php?id=3195)
(I definitely prefer Kouji and his cute Kansai-ben, but his english va is:)
Doug Erholtz
- T.K. in Digimon season 2 ^^;
- Shinji in Fate/Stay Night
- Asuma in Naruto

Allen Walker:
Sanae Kobayashi
- Lucy in Elfen Lied
- Reinforce from Magical Girl Lyrical Nanoha
- Ginkaku/Kinkaku twins from Saiyuki Reload
- Xing Huo from Tsubasa
- And a lot of other minor characters here. (http://www.animenewsnetwork.com/encyclopedia/people.php?id=3160)

Fai D.Flourite:
Daisuke Namikawa
- Bleach - Ulquiorra Schiffer
- Full Metal Panic - Leonard Testarossa
- Dark Knight - Murder Princess
- Tetsuya Sendou - Host Club
- Kami-sama - Saiyuki:Reload (ee, i ♥ kami)
(he was also teen Anakin Skywalker in the Japanese dubs of the SW movies and Frodo in the LotR dub)
Other small parts can be found here. (http://www.animenewsnetwork.com/encyclopedia/people.php?id=1289)
(I prefer Daisuke, but his english va has been in a ton of stuff too)
Vic Mignogna
- Bleach - Ikkaku Madarame
- Dark Mousy - DNAngel
- Full Metal Panic - Kurz Weber (he was actually really cute in this role...)
- Fullmetal Alchemist - Edward Elric
- Saiyuki - Kougaiji (yay K-dawg! ^^)
- Peacemaker - Tatsunosuke Ichimura
- Tengen Toppa Gurren-Lagaan - Viral

And last -

Kagura Sohma:
Kotono Mitsuishi
- Excel - Excel Saga
- Jury - Revolutionary Girl Utena
- Usagi - Sailor Moon
- Satsuki - X/1999
her other parts are here. (http://www.animenewsnetwork.com/encyclopedia/people.php?id=720)
Her english VA is
Meredith McCoy
- Maria Ross - FMA
and a bunch of others small parts ^^; Whee, that was fun!