That's easy.
1. Cowboy Bebop- It was the first great anime I ever watch and is the one that got me started watching anime, may have not been the first but without it I never would have gotten into anime or hentai (oh no). I still say that it is my personal favorite and one of the ton ten anime of all time.
2. Bleach- Well I have to say it for the sole reason that.... well I mean.
3. Bitter Virgin- Well I mean if you've read this then you already know why I absolutely love this manga. There's no need for a explanation I literally could not put it down, I was at the dinner table with my computer reading while I was eating. I just had to know if they would get together or not, it's so sad really touch's me though.
Link to it at Manga Fox