Regarding Someday in the Rain.
Around 15:33, Kyon thought "The forecast said a 10% chance of rain".
So it's possible that the rain was caused by Haruhi's wish.
And for those who don't know what Ai Ai Gasa is.
http://en.wikipedia.org/wiki/Ai_Ai_Gasa
http://tvtropes.org/pmwiki/pmwiki.ph...getherUmbrella