/Mega-late.
So after hearing a lot of "hoopla!" about Railgun, I decided to check out the series. So I decided I'd actually watch the first season (Index, unlike what I did with Haruka where I started season 2, then season 1.) and I marathoned it.
Very good series, I'm not going to go into great deal, but I really liked it. I usually watch harem/comedy/romance/drama anime (Bakemonogatari, L*S, Clannad, Nyan Koi etc.) but this was nice for a change. I really enjoyed the characters and how Touma always seems to survive even though all he has is his right hand.
In short, off the top of my head, 8.5/10. Going to start Railgun now.