I should probably note that i watch a lot of anime
The first anime i watched was shown to me by my brother when i was 6 years old, and it was
rated R+18, and it was called, "Ninja Scrolls". It was pretty sweet, still awesome. and i only got back into anime at the start of 2010, and i literally mean the start, 13 of January and i just started watching Gurren Lagann and realised, "F*ck it, anime obviously got a lot better and is the only thing that will pass the time in this dead end rural shit town i live in" (Crib Point, VIC, Australia)
Tengen Toppa Gurren Lagann is mine
Honorable Mentions go to Angel Beats, Highschool of the Dead, Toradora and a long list of others