Love's Hollowfication limit is 3 minutes.
Hollowfication is activating hollow powers the said person gained or was born with. It usually appears as a white mask.
Gin and Tousen
zommari is the 7th espada in aizens army after he separates himself from the soul society.
Possibly, the whole story hasn't been told yet. but from what i have seen i think so.
Yes he can. Just by going into bankia form and summuning his mask allows him to go "Hollow" But he does need the hollow inside him to agree with loaning ichigo his power as well and ichigo has to wiat a few minutes in between each "Hollowfication"
The reason why the Espada could not see through Aizens Zanpakuto is because it makes copys of anyone he wants so frickin real that it can not be told apart.
Yes there will be a 4th Movie. It's currently in the making along with another Naruto Shippuden Movie. Expected release date is the end of 2010. The movie deals with a "full hollowfication" of Ichigo.
I'd say Head Captain Yamamoto's. If we'd have seen Aizen's, his may have surpassed Yamamoto's. Seeing as it's Shikai form was enough to fool him. Ichigo's is pretty powerful, but then that's mainly because he combines it with his Hollowfication. Even then, it doesn't surpass Yamamoto's. Once Hitsugaya's and his Zanpakuto have matured, he may be able to surpass Yamamoto. He is also often called a 'prodigy'.
arrancars are basically hollows that have been modified to be stronger,faster etc whereas vizards are shinigami who have undergone the hollowfication process but have learned to control their inner hollow (to an extent) and can put on/ remove their masks as they please
Most fans assume it is because he is the only one who hasn't been put under Aizens hypnosis. So they believe he is the only one who has a chance of beating him. The Gotei 13 know that, so they want to protect him.
Aizen's Bankai has not been seen in the manga or anime as of yet. He probably won't use it because he has the power of the Hogyoku on his side. If he ever does, it'll be when he fights Ichigo in the real Karakura Town.