A small attempt at recognizing some of these:
Lord Raa said:
Perpetually broke quartet struggle to make ends meet doing a job they're not really all that good at.
Cowboy Bebop
The Ero-Sennin said:
A Mary Sue prince tries to avenge his mother's death.
Code Geass
Rising Dragon said:
Pervert murdered over a glove fights a fried chicken.
This one made me laugh, High School DxD
Oni_Rinku said:
A boy plays a video game, people die all around him.
SAO?
KurokamiDG said:
Guy starts writing in a stolen diary, and develops a god complex.
Another one that made me laugh, only a swimming reference is missing - Death Note
Hoki said:
I can't really describe this any other way: Girls riding tanks
Girl makes friends using pink lasers
a guy from a simple diner enters cooking school
a bunch of high school students playing with animated plastic models
bald man in a cape becomes a superhero, nobody notices
teenagers fight over discount microwavable food at convenience stores
angsty teenagers pilot giant robots with the souls of their mothers
guy with hypnotic powers becomes batman, starts a rebellion against evil empire
anthropomorphic personification of canned drinks fight for superiority
1. Sounds a bit off, Girls und Panzer
2. Vita stop tsuning out at Nanoha.
3. Shokugeki no Soma
4. Gundam Build Fighters
5. OPM
6. Bento
7. Evangelion (In case of Rei it is her twin sister, Ritsuko is a filthy liar and commited a mass murder in front of Shinji)
8. Code Geass? I put the ? because Lelouch can't wrestle down a can of juice, so I don't know where the Batman reference comes in.
9. Akikan (huh, I actually managed to remember the name of it without resorting to searching by description on google)