>>641938Animegataris
gdgd fairies
Joshiraku
Lucky Star
Akiba's Trip
Pastel Memories
Last Period (This specifically parodies Gacha games and their shitty practices rather than anime)
I can't vouch for the quality of most of these, since I've only watched Animegataris, gdgd fairies, and most of Last Period, but I know a lot of people like Joshiraku, Lucky Star (obviously), and Akiba's Trip.