I’ve never been really into manga myself either, though I have to credit my interest in anime with the first and only manga I ever read the entirety of, which was Ranma 1/2.
EDIT: So I finally finished Steins;Gate. I think I can sum up the experience in one picture:
Seriously. I wanted to cry so many times. So amazingly powerful and well written. But [color=’#151515’]I was very glad (and impressed) that the ending managed to be satisfying, make sense, and be happy at the same time. It definitely did a hell of job to try and kick Trigun off the top of my favorites, and I’m pretty sure it succeeded.