Gai Daigohji's seiyuu (or voice actor) is none other than Seki Tomokazu, my third favorite seiyuu. His roles include Toji in Shin Seki Evangelion, Chichiri in Fushigi Yuugi, Touya in Card Captor Sakura, Van-sama in Tenkuu no Escaflowne, and Kamui in X: The Movie. You can see Tomokazu-san in the in-betweeners at the beginning of Episode 3 and the end of Episode 4 of Nadesico. Of course, ADVision couldn't get them for the American release. Sorry to those of you who missed out on seeing them.

For now, the only sound files that I could get are from the third Nadesico Original Soundtrack, "It's the Third One Already?" These sounds are from the Gekiganger Karaoke section of the soundtrack where Gai introduces each song for the karaoke section. It's a shame it's all in Japanese.

Gai's Hotblooded Talk #1 - Gai introduces the Karaoke Section.
Gai's Hotblooded Talk #2 - Gai introduces the second song, Habatake Gekiganger 3!
Gai's Hotblooded Talk #3 - Gai introduces Shouri no V-Da, Gekiganger V!
Gai's Hotblooded Talk #4 - Gai introduces Seigi no Robotto, Gekiganger 3!
Gai's Hotblooded Talk #5 - Gai says goodbye and ends the karaoke section.