1) nyan cat
XZIBIT
Leek spin
Narwals (on shirt)
5) Scumbag Steeve hat (on Orihime)
keyboard cat
Troll face
Rage guy
Me gusta
10) Y U NO
Auto tune the News
Poker Face
LOL! face
Forever alone
15) Trollololo
Chacarron
IMMA FIRAN MY LAZZA (Shoop da woop)
Numa Numa
Peanutbutter jelly time
20) Owl Really?
Badger Badger Badger emotion_awesome
hamster dance
Double rainbow
25) troll dad
Staredad
***** bear
NOPE! Chuck Testa
Obama Not Bad
30) Rebecca Black's Friday
F*** Yea! face
Rick Roll
Chocolate Rain
TacNyan
35) WTF green animal meme (I don't know what it is called)
All your base are belong to us
Dramatic groundhog
* re-watches to find all missed*
When screen zooms out at end of nyan cat and XZIBIT appears you can also see:
boxy
bake a cake
AND
40) "NOOOOOOO!!!" guy from Avatar: The Last Airbender
So... No, I can only name 38 but I recognized all 40.