GT was never canon, DBZ was made from the manga whereas Toriyama iirc didn't play a part in GTs story (he did do the SSJ4 concept art tho). These new movies however would be considered canon. I doubt Vegeta will reach SSJ3, more likely SSJG.
Does popping a jab count? Saw a movie with the missus at the time and behind us sat this fat guy laughin and talking to himself thru most of the movie, her idea? Punch him. So I did (to a round of applause). Some people man....
Ultron created Vision as a servant, Vision later defected and became part of the Avengers. I think something similar may happen in AoU (Vision meets Tony and oh god father moment?).
His reactions when they were crashing thru Ronans ship, after Groot whooped tons of ass, his interactions with pretty much everyone, funniest character by a mile imo.