Originally Posted by ShieldAnvil
Azumanga Daioh, one web-episode and "the Very Short Movie"
Black Lagoon, 7(?) omakes
Bunny Drop has a couple of mini-episodes
Chrono Crusade, 11(?) Azmaria's Lessons extras
Elfen Lied has one OVA-episode
Genshiken, Kujiki Unbalance 3 episodes
Hellsing Ultimate, "The Dawn" short episodes (don't know how many)
Planetes, 9 picture dramas
RahXephon one OVA bundled with game
Spice and Wolf has two OVA episodes and one "Training with Holo" short
Tengen Toppa Gurren Lagann, one short OVA included with a game
To Aru Majutsu no Index has those "To Aru Majutsu no Index-tan" omakes
Toradora! has one OVA and four mini-episodes
Tsukuyomi Moon Phase, one OVA
Vandread, two OVAs
Wolf's Rain, four OVAs
So what are the status of those on DVD/BD in R1?
All I know is that Azumanga Daioh's "Very Short Movie" was included in the singles and I believe only the 2009 complete collection re-release. And that Vandread's OAV was released with the FUNi Ultimate Collection (and its Anime Classics re-release).