Oh yes, how could I forget! I love the entire Fate Series. The timelines will F you up though.
Dude, I'm not that old, just close to middle age in fact.
I was introduced quite late (comparatively) to anime. Walked in on a YO watching anime during office hours. For a breach of discipline, I gave him a bit of a tough time and gave him a good piece of my mind for watching "cartoons" at his age. I did not raise the matter officially since I did not want to damage his career.
Any way, when he was being given his tea-out, he was asked to share his thoughts with the rest of the officers and he harkened back to this incident. He was thankful that I didn't take the matter to higher-ups, conceded that he deserved the treatment he got but said that he was upset that I called anime "cartoons" and challenged me to watch a series of his choice and then reserve my judgement. He left me with Death Note and I haven't stopped watching anime since. Never in office times though
That being said though, I think watching anime at my age does affect my preferences a bit. I don't have the patience to watch watered down shonen anime like Fairytail and Bleach, trust me I've tried. I'm much happier watching short, crisp sub 50 episode ones (Gintama being an exception).
I also prefer animes with more somber themes rather than all that "friendship makes the world go round" rabble of shonen animes.
I've watched Code Geass, one of my first few titles in fact. Its a truly wonderful series. I should probably re-watch it some time.
I'm afraid I will have to ban you for this transgression.