Hmm, sounds like Genshiken should be one of the first regardless. Will be a nice SoL replacement for Silver Spoon. 3 seasons of it though? Damn!
I'll wait to hear more on the other ones. Blue Gender souds interesting and the girl that works in the photo dept. keeps harassing me to watch Blood+, but I know nothing about it...
genshiken is a little odd when it comes to releases.
it should be noted
https://myanimelist.net/anime/240/Genshiken?q=genshi
https://myanimelist.net/anime/1813/Genshiken_OVA
https://myanimelist.net/anime/2508/Genshiken_2
are the adaption of the original manga
while
https://myanimelist.net/anime/18465/Genshiken_Nidaime is the adaption of the sequel manga created years after the original ended.
https://myanimelist.net/anime/19159/Genshiken_Nidaime_OVA is just an extra ova related to the sequel.
but wait... that is not all.
the characters are in an anime club, and they watch a fictional anime. an anime that they decided to go ahead and make some episodes for
https://myanimelist.net/anime/669/Kujibiki_Unbalance
but wait... there is still more.
because that fictional anime did alright, they turned it into a full series
https://myanimelist.net/anime/1591/Kujibiki♥Unbalance
note: while the kujibiki ovas are worth watching to laugh at how bad they are, I can't recommend the full series at all.
as for blood+
the first 10 or so episodes are not good. generic edgy with little of real interest going on. basically fails at being interest, cool, or touching in all ways possible. Not horrible but far from good. After that how ever they completely change the main character's situation, and actually start going into lore, and building up characters and threats and what not properly, and the rest of the series is actually a fairly solid watch.
Do keep in mind with blood+ though that there isn't a good cheap legal way I know of to watch it. Sony's release of it was screwed up beyond belief. originally releasing the series disk by disk (4-5 episodes) at $30-$40 each. When they got to the last disk of the first season though, they said.... eh... season sets would work better and decided that instead of releasing the 6th and final disk of the first season, they would just release a season one complete set and make it the only possible way to get the whole first season. They then proceeded to release season two (aka the second half of season one but still another 25 eps) in a season set. The second set still might be avalible for decently cheap (I picked it up for like $10) but the sets originally retailed for like $125, the first set had a smaller run, and last I checked was going for $200-$300.
as far as I know the series isn't streaming anywhere, and hasn't been released in other countries for me to import it. Thus I only have most of it (I have everything but that last disk of the first season :/)