Aquarion EVOL: Amata and Andy were looking up Mikono's skirt whilst in a hole then Amata goes flying and headbutts into Mikono's butt.
BRS: No idea, dropped the hell of out of this anime. Too much wangst for even me :P.
HSI: Don't think there was one.
Fractale: From the 2 episodes I saw, nope.
Ano Hana: Don't think there was one.
Canaan: Can't really remember, but we did get a fair bit of fan-service from that "Get some!" crazy bitch
True Tears: There were definitely... from the first episode. It was not however, in your face and you could easily miss it, but considering I forgot how many times I rewatched it and there was one rewatch for the deliberate purpose of watching it from a perv point of view, I recall at least 3.
Toradora: Can't remember but like you said, lots of "boing boing". And a
ecchi sketchy wan tacchi.
Kodomo no Jikan: -_-'. This anime ugh. Let me go ask my RL mate Rethice about this because he's watched the whole thing...
Venus to Mamoru: Never heard of this anime.