If I'm just "Boy #123719827289147918749" in that world, probably one of them slice of life animes, since there's the least chance of getting killed there.
If i'm the pro/antagonist, then either Haruhi or Bleach, give me dem god powers (looking at you Haruhi/Aizen)
To the pokemon folk: Do you want to be an NPC in this?
Hmm i hope this isn't necroing =3 i thought it was an awesome topic. Anyways, i agree with AKFrost on this one.
Just jumping into a world as an random npc doesn't seem to really benefit you in the anime world XD If thats the case i would rather be in Dog Days, were its near impossible to die unless you are off the blessed areas. And hey, cat chicks and dog chicks. ( Males as well)
But if i'm a more significant role character that i wont die by failing at existence, then i would gladly go in Gosick, or Highschool of the dead, or really anything that has some sort of violence in it, with monsters, zombies or whatever. I think it would be fun
Though i did grow out of pokemon the animated series, since ash is still like 12. but i wouldn't mind that world either...but pretty fun.