Damn, I actually JUST finished watching the entire series (again). I may join anyway though.
For those who haven't re-watched it ever, there is a lot of small nuances that become more relevant once you re-watch it. I'm on my 5th (6th? - I know, it's scary) re-watch and I am still finding things I hadn't noticed before.
Toradora is a dangerous anime for me. It's the only anime that I am almost afraid to watch one episode of, because I know if I do I will have to watch all of them. Massive time sink - but worth it.
After watching the anime I am really tempted to read the novels (again) but don't think I'll tempt fate (yet).