According to Aniplex, a 10min short anime of Gintama "Shiroyasha Koutan" will be released on September 30th. It was shown at Jump Super Anime Tour 2008 and had never been released as a DVD.
It's a trailer of an imaginary Gintama movie. Gintama OVA shown at Jump Anime Tour '05 is also included in the DVD.+ More
Characters & Voice Actors

Kagura
Main
Kugimiya, Rie
Japanese
Sakata, Gintoki
Main
Sugita, Tomokazu
Japanese
Shimura, Shinpachi
Main
Sakaguchi, Daisuke
Japanese
Elizabeth
Supporting
Takamatsu, Shinji
Japanese
Hasegawa, Taizou
Supporting
Tachiki, Fumihiko
Japanese
Hijikata, Toushirou
Supporting
Nakai, Kazuya
JapaneseRecommended for you
Bonobono
Movie
103m
[RAW] Bucket de Gohan
TV
25m
Earth Story Telepath 2500
Movie
105m
[RAW] Chimpui Specials
Special
10m
Chogattai Majutsu Robot Ginguiser Specials
Special
24m
Choujikuu Robo Meguru
OVA
8m
Chouriki Robo Galatt
TV
25m
The Furious Yama 2nd Season
ONA
15m
Squirrel and Hedgehog
TV
20m
Dororonpa!
TV
10m
[RAW] Duel Masters King
TV
24m
Big Talk Youth Tour
ONA
12m
The Immortal Legend
ONA
20m
Doraemon Movie 40: Nobita's New Dinosaur
Movie
110m
One Step Toward Freedom
ONA
12m