As usual, I try to give pretty much everything a chance, so I'll just list what I'm most excited for:

Heavy Object - Having read the LN, I always thought this would make a good anime. Hopefully they can pull off the massive objects well.
One Punch Man - The amazingly drawn version of the manga is basically animated already at some points. I can't think it will live up to that, but this should be fun regardless.
Owarimonogatari - I'll take more Monogatari anytime. Ararararagi is the best.
Utawarerumono - I really liked the first anime, and even played the game afterwards. I hope this one is as good.
World Trigger - While this is an anime-original spinoff, I was really impressed with the later part of World Trigger. Definitely a fun shounen, so if their spinoff can live up to that, it should be interesting.
Garo - Gaaarooooo, Gaaroooo. Gaaarooo.

Ones I know less about but am interested in:
Gakusen Toshi Asterisk - the summary reads like every other magical school battle anime (there are like 4 this season!), but A-1 pictures usually does a decent job, so I'm expecting this to be the best of the magical school battle shows this season.
Gundam - Here's hoping it is more 00 and less Reconguista...
Subete ga F - mystery story intrigues me. Ranpo Kitan didn't quite cut it this season.